Vegan green bean casserole with canned beans
Canned green beans in a mushroom and unsweetened soy-milk sauce, baked with whole-wheat crumbs. Makes four side portions.
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This vegan green bean casserole uses canned beans, a mushroom sauce and a whole-wheat crumb topping. Thicken the sauce on the stove, fold in the drained beans and finish the casserole in a wide dish. The original batch makes four side portions, with a temperature check to guide the finish.
Measure the drained beans
Drain the beans before measuring. USDA’s canned-food reference gives 135 g per cup of regular-pack canned green beans, drained solids. Four cups supply the 540 g used here. Packing liquid is outside that weight, and the number of cans needed depends on their drained yield.
The costs below estimate the food used. They rely on a USDA drained-yield reference and a Canadian minimum drained-weight table, with the assumptions explained beside the prices. Neither source measures your particular can. Keep usable extra beans for another meal and refrigerate them promptly; buying whole packages can cost more than the portion used.
Thicken the sauce first
Canned beans are already tender. Minimalist Baker’s canned-bean note skips the blanching used for fresh beans. Here, the mushrooms and onion cook before the beans enter the pan, so they can soften without repeatedly stirring the beans.
Whisk the soy milk into the flour-coated vegetables gradually. Let the sauce thicken before assembly; it should coat a spoon and remain pourable. Choose plain unsweetened soy milk for the savoury sauce; a vanilla variety changes its flavour. The estimates count the flour, bread and all the measured oil, including the portion coating the crumbs.
Check the bread’s ingredient list for milk, eggs or honey. Loaf thickness varies, so weigh the bread before turning it into crumbs. The nutrition reference uses a 42 g slice; a thin sandwich slice may weigh less.
Keep the layer shallow
Use the stated dish capacity as well as its approximate footprint. A deeper dish changes how far heat must travel to the centre. For a doubled batch, divide the mixture between two matching dishes or bake separate batches. The serving controls keep the original cooking times fixed.
Start checking while the crumbs brown. CDC’s casserole temperature guidance calls for 165°F; the card gives the corresponding 74°C target. A browned top does not establish the centre temperature. Loose foil can protect the topping while the filling finishes heating.
Plan the rest of dinner
Each serving is a quarter of this casserole, made with 135 g of drained beans. It is a vegetable side. A tofu and potato tray bake is one option for the main dish, with its own ingredients, cost and nutrition. Our protein portions guide explains how to assess the rest of a plant-based meal.
For saved portions, follow the card’s shallow-container and reheating instructions. The food-storage guide covers planning usable leftovers. Expect the crumbs to lose some crispness in storage rather than treating the reheated topping as freshly baked.
Vegan green bean casserole with canned beans
Canned green beans in a mushroom and unsweetened soy-milk sauce, baked with whole-wheat crumbs. Makes four side portions.
- Prep
- 15 min
- Cook
- 40 min
- Rest / soak
- 5 min
- Total
- 60 min
- Makes
- 4 servings
One original serving: one quarter of the casserole, a side made with 135 g drained green beans
Household amounts use US cups and spoons and are approximate. Metric uses grams and millilitres; small spoon amounts may stay in teaspoons or tablespoons with scaled gram references. About ingredient measures.
Review the addition before changing your list.
Equipment: 3-quart / 2.8 L rectangular oven-safe baking dish, about 9 × 13 inches / 23 × 33 cm, Large deep sauté pan, at least 3 quarts / 2.8 L, Colander and kitchen scale, Knife, cutting board, measuring cups and spoons, Small bowl and whisk; food processor optional for crumbs, Food thermometer and oven mitts
Equipment
3-quart / 2.8 L rectangular oven-safe baking dish, about 9 × 13 inches / 23 × 33 cm, Large deep sauté pan, at least 3 quarts / 2.8 L, Colander and kitchen scale, Knife, cutting board, measuring cups and spoons, Small bowl and whisk; food processor optional for crumbs, Food thermometer and oven mitts
Ingredients
Filling
Topping
Instructions
Storage & reheating
Refrigerate promptly in shallow covered containers, within 2 hours (1 hour above 32°C / 90°F), at 4°C / 40°F or below. Use within 3 days. Reheat only the portion needed, covered in the microwave; stir, leave covered for a few minutes, then check several places for 74°C / 165°F throughout. The crumb topping may soften.
Substitutions
- Another plant-based whole-wheat loaf can supply the crumbs. Weigh the stated bread amount; slice size, sodium and allergens vary. Check for milk, eggs and honey.
- Fresh and frozen beans need their own preparation. This card's weights, timing and estimates use drained, regular-pack canned beans.
- You can omit the measured salt; the default estimates include it. The canned beans and bread also supply sodium.
Cooking notes
- The original four-serving batch uses one 3-quart / 2.8 L dish, about 9 × 13 inches / 23 × 33 cm, assembled while the filling is hot. Allow about 40 minutes for stovetop work and baking; doneness checks control the finish.
- Serving controls keep the original times and temperatures fixed. Double the batch in two matching dishes or cook batches separately; do not make one deeper casserole. Extra batches take more time.
- Can counts and drained yields vary. Buy enough cans to obtain the stated drained amount. Cups and slices are approximate; weighed grams control estimates. Soy milk uses the documented approximate mass normalization.
- All measured oil and bread are counted. For the original batch, small weights are thyme leaves 0.5 g, salt 0.75 g and pepper 0.6 g. US/Canadian bean costs use disclosed drained-mass proxies, not measured yields of the retail cans.
Contains: wheat, soy, sesame. Check the labels of your ingredients.
Estimated nutrition per serving
- Calories
- 230 kcal
- Protein
- 10.7 g
- Carbohydrates
- 27.6 g
- Fat
- 10.7 g
- Saturated fat
- 1.4 g
- Fiber
- 6.9 g
- Sugars
- 6.5 g
- Sodium
- 555 mg
For one original serving, excluding optional ingredients and suggested sides. How we estimate nutrition.
Ingredient nutrition sources
Estimates use the required ingredient weights above and these food references. Brands, water content, and label rounding can change the result.
- canned cut green beans, regular salt pack, well drained; packing liquid excluded (USDA SR Legacy ZIP download): USDA SR Legacy: Beans, snap, green, canned, regular pack, drained solids. All eight tracked fields read from the official per-100-g food_nutrient.csv; energy kcal, sodium mg, other nutrient masses g. Current brand salt content and draining vary. Accessed 2026-10-29. Food record: FDC:169143;NDB:11056.
- olive oil, divided between vegetables and crumbs: Flora Organic Extra Virgin Olive Oil retailer reference explicitly states 14 g of oil per serving. Panel: 120 kcal, 14 g fat, 2 g saturated fat; protein, carbohydrate, fibre, sugars and sodium explicitly 0. Values normalized to 100 g; label rounding retained. Accessed 2026-10-28.
- white mushrooms, sliced, including usable stems; raw weight: USDA SR Legacy April 2018 CSV: Mushrooms, white, raw. Nutrient values from food_nutrient.csv joined through nutrient.csv; kcal energy, grams nutrient masses, and mg sodium per 100 g edible portion. Accessed 2026-10-28. Food record: FDC:169251;NDB:11260. USDA SR Legacy dataset download (ZIP).
- onion, finely diced: USDA SR Legacy: Onions, raw. All eight tracked fields were read directly from official food_nutrient.csv per 100 g edible food; sodium mg, other nutrients g except energy kcal. Generic food estimates vary by variety and preparation. Accessed 2026-10-28. Food record: FDC:170000;NDB:11282. USDA SR Legacy dataset download (ZIP).
- garlic, minced: USDA SR Legacy: Garlic, raw. All eight tracked fields were read directly from official food_nutrient.csv per 100 g edible food; sodium mg, other nutrients g except energy kcal. Generic food estimates vary by variety and preparation. Accessed 2026-10-28. Food record: FDC:169230;NDB:11215. USDA SR Legacy dataset download (ZIP).
- plain whole-wheat flour, spooned into the cup and levelled: Current linked King Arthur manufacturer package PDF, 100% hard red whole-wheat flour, raw/dry. All eight tracked Nutrition Facts values are printed per 28 g quarter-cup and normalized to 100 g; energy kcal, sodium mg and other nutrient masses g. Printed zero values and label rounding are retained as estimates. Accessed 2026-10-29.
- plain unsweetened soy milk (not vanilla): Silk Unsweet Soymilk US manufacturer Nutrition Facts panel per 240 mL: 90 kcal, 8 g protein, 4 g carbohydrate, 4.5 g fat, 0.5 g saturated fat, 2 g fibre, 1 g sugars, 70 mg sodium. Panel energy is 90 kcal while page prose says 80 kcal; the numeric panel is used. The label supplies volume, so nutrition per 100 g is an estimated mass normalization. Accessed 2026-10-28.
- dried thyme leaves: USDA SR Legacy: Spices, thyme, dried. All eight tracked fields were read directly from official food_nutrient.csv per 100 g edible food; sodium mg, other nutrients g except energy kcal. Generic food estimates vary by variety and preparation. Accessed 2026-10-28. Food record: FDC:170938;NDB:2042. USDA SR Legacy dataset download (ZIP).
- fine salt: Hain Sea Salt retailer panel per 1.5 g quarter-teaspoon: 590 mg sodium; calories, protein, carbohydrate, fat, saturated fat, fibre and sugars explicitly 0. Measure fine salt by mass; teaspoon weight varies with crystal size. Accessed 2026-10-28.
- ground black pepper: USDA SR Legacy: Spices, pepper, black. All eight tracked fields were read directly from official food_nutrient.csv per 100 g edible food; sodium mg, other nutrients g except energy kcal. Generic food estimates vary by variety and preparation. Accessed 2026-10-28. Food record: FDC:170931;NDB:2030. USDA SR Legacy dataset download (ZIP).
- plant-based whole-wheat bread, weighed before crumbing: Daves Killer Bread 100% Whole Wheat retailer label per 42 g slice. The observed ingredient list contains organic whole wheat, water, cane sugar, wheat gluten, canola oil, molasses, sea salt, yeast, cultured wheat flour, vinegar, acerola powder and enzymes; no honey, dairy or egg ingredients listed. All eight tracked amounts were observed; normalized to 100 g, retaining label rounding. Sodium mg, other nutrients g except energy kcal. Accessed 2026-10-28.
Ingredient cost breakdown
Estimated cost of the amount used; optional extras are separate.
| Ingredient | USD | CAD |
|---|---|---|
| canned cut green beans, regular salt pack, well drained; packing liquid excluded | $1.69 | $4.08 |
| olive oil, divided between vegetables and crumbs | $0.34 | $0.32 |
| white mushrooms, sliced, including usable stems; raw weight | $2.25 | $3.27 |
| onion, finely diced | $0.17 | $0.15 |
| garlic, minced | $0.11 | $0.05 |
| plain whole-wheat flour, spooned into the cup and levelled | $0.07 | $0.06 |
| plain unsweetened soy milk (not vanilla) | $1.16 | $1.14 |
| dried thyme leaves | $0.05 | $0.02 |
| fine salt | $0.00 | $0.00 |
| ground black pepper | $0.03 | $0.02 |
| plant-based whole-wheat bread, weighed before crumbing | $0.76 | $1.15 |
| Recipe total | $6.63 | $10.26 |
| Per serving | $1.66 | $2.57 |
Price reference: 2026-10-27. Price reference: 2026-10-27. Regional prices vary. Pantry ingredients included; taxes, delivery, and utilities excluded.
Price sources & package sizes
United States · USD
- canned cut green beans, regular salt pack, well drained; packing liquid excluded: Walmart US, Cheyenne Dell Range Blvd Supercenter, Wyoming; default page context, not independently selected; $1.42 / 453.59237g. Price source (observed 2026-10-29). 28 oz AP = 793.7866475 g; approximately 16 oz drained = 453.59237 g. Retail can class is unverified. Cost is for usable drained solids. Taxes, delivery, and checkout changes were not verified. Drained mass is an independent USDA Food Buying Guide proxy for cut canned beans in a 28 oz No. 2-1/2 can, not a measured yield of this retail product. The commodity and declared net mass match; retail can class is unverified. Price was retrieved from a retailer text snapshot reported crawled two days earlier; retrieval is not a live checkout quote.
- olive oil, divided between vegetables and crumbs: Walmart US, US online listing; store not stated in captured result; $5.94 / 469.23333572g. Price source (observed 2026-10-28). Package mass is estimated from the olive-oil label reference of 14 g per 15 mL (0.933333 g/mL); retailer package quantity is volume, not measured mass. US fluid ounces converted at 29.5735295625 mL per fl oz.
- white mushrooms, sliced, including usable stems; raw weight: Walmart US, US online listing; store not independently selected; $2.04 / 226.796g. Price source (observed 2026-10-27). 8 oz = 226.796 g; washed mushrooms including edible stems, no assumed discard.
- onion, finely diced: Walmart US, Phoenix E Thomas Rd Supercenter, Arizona page context; $2.76 / 1197.4838568g. Price source (observed 2026-10-28). Edible package mass uses USDA Food Buying Guide yield: 1 lb purchased mature whole onions yields 0.88 lb raw ready-to-cook onion; actual trimming loss varies.
- garlic, minced: Walmart US, Sacramento Gerber Rd Supercenter, California page context; $3.07 / 170.09713875g. Price source (observed 2026-10-28).
- plain whole-wheat flour, spooned into the cup and levelled: Walmart US, US online listing; default ship-to Des Moines, Iowa 50307 in root recheck; pickup store not independently selected; $5.98 / 2267.96185g. Price source (observed 2026-10-29). Package weight uses net flour contents: 5 avoirdupois pounds at exactly 453.59237 g/lb = 2267.96185 g. The manufacturer also prints the rounded equivalent 2.27 kg. No shipping/gross package weight or cooking yield is used. No selected-item markdown or promotion end date was shown in the captured main price block; generic recommendation promotions are not attributed to this item. Same King Arthur product family as the manufacturer nutrition reference; retail label/formulation may change.
- plain unsweetened soy milk (not vanilla): Walmart US, South Hill Supercenter page context; state not captured; $4.57 / 1892.705892g. Price source (observed 2026-10-28). Package mass is estimated at 1 g/mL for soy milk; the retailer label supplies volume, not measured grams. US fluid ounces converted at 29.5735295625 mL per fl oz.
- dried thyme leaves: Walmart US, United States online listing; retailer default context, checkout not verified; $2.12 / 21.26214234375g. Price source (observed 2026-10-28). Avoirdupois ounces converted using 28.349523125 g per oz. Single dried herb pricing reference.
- fine salt: Walmart US, Sacramento Gerber Rd Supercenter, California page context; $0.94 / 737g. Price source (observed 2026-10-28).
- ground black pepper: Walmart US, US online listing; store not independently selected; $3.58 / 85.04856937g. Price source (observed 2026-10-28). Net avoirdupois ounces converted at exactly 28.349523125 g per ounce.
- plant-based whole-wheat bread, weighed before crumbing: H-E-B, Victoria H-E-B plus!, Texas page context; $6.42 / 708.738078125g. Price source (observed 2026-10-28). Avoirdupois ounces converted using 28.349523125 g per ounce. Manufacturer FAQ says all DKB bread products are vegan; snack-bar exceptions do not apply to this bread. H-E-B current ingredient list includes sesame flour and declares wheat and sesame. This price reference does not establish that every regional formula matches the separate nutrition reference.
Canada · CAD
- canned cut green beans, regular salt pack, well drained; packing liquid excluded: Walmart Canada, Mississauga Heartland, Ontario; L5V 2N6 default page context; $1.67 / 221g. Price source (observed 2026-10-29). 398 mL is the declared package volume, not package grams. No AP gram mass or retained percentage is asserted. 221 g is the costing denominator only; weigh drained solids for the recipe. Price and availability may differ by store, date, and checkout. The costing denominator is the CFIA minimum drained weight for cut/short-cut beans in a 398 mL package. It is a conservative minimum-mass proxy, not a measured or typical yield of this brand. Price was retrieved from a retailer text snapshot reported crawled three weeks earlier: CAD 1.67 Rollback, previously CAD 1.88, with no promotion end date shown. Retrieval is not a live checkout quote.
- olive oil, divided between vegetables and crumbs: Walmart Canada, Mississauga Heartland, Ontario; L5V 2N6 page context; $10.97 / 933.33333333g. Price source (observed 2026-10-28). Package mass is estimated from the olive-oil label reference of 14 g per 15 mL (0.933333 g/mL); retailer package quantity is volume, not measured mass.
- white mushrooms, sliced, including usable stems; raw weight: Walmart Canada, Mississauga Heartland, Ontario L5V 2N6 (retailer default listing); $2.97 / 227g. Price source (observed 2026-10-27). Organic whole-white-mushroom price reference. Edible stems retained; price is a listing snapshot and availability may vary.
- onion, finely diced: Walmart Canada, Canada online listing; store not stated in captured result; $2.44 / 1197.4838568g. Price source (observed 2026-10-28). Edible package mass uses USDA Food Buying Guide yield: 1 lb purchased mature whole onions yields 0.88 lb raw ready-to-cook onion; actual trimming loss varies.
- garlic, minced: Walmart Canada, Mississauga Heartland, Ontario; L5V 2N6 page context; $3.97 / 453.59237g. Price source (observed 2026-10-28).
- plain whole-wheat flour, spooned into the cup and levelled: Walmart Canada, MISSISSAUGA HEARTLAND / Mississauga, Ontario L5V 2N6; retailer default context, not independently selected; $4.97 / 2500g. Price source (observed 2026-10-29). Current displayed promotional price CAD 4.97; previous displayed price CAD 5.93; stated saving CAD 0.96. No promotion end date observed. Refresh at final publication rather than inventing validUntil. The declared 2.5 kg product quantity is treated as 2500 g net dry flour contents; no packaging mass, drained yield or cooked yield conversion. Regional cost proxy only: the Canadian product lists whole wheat flour, amylase, ascorbic acid and azodicarbonamide. The US nutrition-reference product lists 100% hard red whole-wheat flour. Their labels and baking behaviour are not assumed identical. Retailer states contains wheat and may contain barley, mustard, oat, rye, soybean and triticale ingredients. This is cross-contact information, not a claim that every listed ingredient is present.
- plain unsweetened soy milk (not vanilla): Save-On-Foods, Canada online listing; store not stated in captured result; $4.49 / 1890g. Price source (observed 2026-10-28). Package mass is estimated at 1 g/mL for soy milk; the retailer label supplies volume, not measured grams.
- dried thyme leaves: Walmart Canada, Heartland, Mississauga, Ontario; L5V 2N6 page context; $2.27 / 50g. Price source (observed 2026-10-28). Ingredient is dried thyme leaves.
- fine salt: Walmart Canada, Mississauga Heartland, Ontario; L5V 2N6 page context; $1.63 / 1000g. Price source (observed 2026-10-28).
- ground black pepper: Walmart Canada, Canada online listing; store not independently selected; $2.27 / 85g. Price source (observed 2026-10-28).
- plant-based whole-wheat bread, weighed before crumbing: Metro Canada, Canada online listing; retailer default context, checkout not verified; $6.99 / 510g. Price source (observed 2026-10-28). Canadian vegan whole-wheat-based loaf pricing proxy. First ingredient organic sprouted whole wheat, with sprouted khorasan flour and a seed blend. This seeded sprouted loaf is a commercial price reference, not nutritionally identical to the separate generic whole-wheat/Dave's nutrition reference. Retailer marks the product Vegan and Plant Based. Manufacturer confirms Silver Hills bakery products contain no animal-derived ingredients. Contains wheat and sesame.
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