A classic American green bean casserole made two ways: a from-scratch version using fresh green beans and mushrooms, and a pantry version using canned ingredients. Both are balanced, restrained, and built to serve a crowd.
Version 1: Fresh Green Bean Casserole (From Scratch)
Vegetables
1½lbfresh green beanstrimmed and halved
8ozmushroomsfinely sliced
½medium onionfinely diced
2clovesgarlicminced
Fat & Dairy
3tablespoonunsalted butter
¾cupheavy cream
½cupwhole milk
Thickener & Seasoning
2tablespoonall-purpose flour
1teaspoonkosher salt
½teaspoonblack pepper
Topping
1½cupscrispy fried onions
Version 2: Pantry Green Bean Casserole (Canned)
314.5-oz cans green beans, drained very well
210.5-oz cans cream of mushroom soup
½cupmilk
1teaspoonblack pepper
1½cupscrispy fried onions
Instructions
Instructions
Fresh Green Bean Casserole (From Scratch)
Preheat oven to 375°F (190°C). Butter a 9×13-inch baking dish.
Bring a large pot of salted water to a boil. Blanch 1½ lb green beans for 3–4 minutes until just tender-crisp. Drain and set aside.
In a skillet, melt 3 tablespoon butter over medium heat. Add onion and cook until soft, 4–5 minutes.
Add mushrooms and cook until moisture releases and evaporates, 6–8 minutes. Add garlic and cook 30 seconds.
Sprinkle in 2 tablespoon flour and cook 1 minute, stirring.
Slowly whisk in ¾ cup cream and ½ cup milk. Simmer until thickened, 3–4 minutes. Season with salt and pepper.
Combine green beans with sauce and transfer to baking dish.
Bake uncovered 20 minutes, then top with 1½ cups fried onions.
Return to oven and bake 10–15 minutes until bubbling and golden.
Pantry Green Bean Casserole (Canned)
Preheat oven to 375°F (190°C). Butter a 9×13-inch baking dish.
In a bowl, combine drained green beans, cream of mushroom soup, ½ cup milk, and black pepper. Mix gently.
Transfer to baking dish and bake uncovered 20 minutes.
Top with 1½ cups fried onions and return to oven 10–15 minutes until heated through and lightly browned.
Notes
NotesDrain canned green beans thoroughly to avoid a watery casserole.For both versions, taste the mixture before baking and adjust seasoning.Fried onions should be crisp, not buried.Storage & Make-AheadAssemble up to 24 hours ahead, refrigerate, and bake before servingLeftovers keep 3–4 days refrigeratedReheat gently; avoid overbaking