Green Bean Casserole
AI-generated image
Vegetarian American

Green Bean Casserole

Tender green beans are folded into a savory mushroom cream sauce, topped with crisp golden onions, and baked until bubbling at the edges. It is a classic American casserole with enough fresh texture and depth for a holiday table or family dinner.

60 min 6 servings Medium
All recipes

How to prepare

1
Heat the oven to 190°C and butter a hlas 2-litre baking dish with 15 g of the butter. Bring a large pot of salted water to a boil.
2
Boil the green beans for 6 to 8 minutes, until bright green and fully tender when easily pierced. Drain, cool briefly under cold running water, then spread on a clean towel and pat thoroughly dry to prevent a watery casserole.
3
Melt 30 g of butter in a large skillet over medium heat. Add the sliced onion and cook for 5 minutes, stirring, until softened. Add the mushrooms and cook for 8 to 10 minutes, until their liquid has evaporated and the edges are golden. Stir in the garlic for 30 seconds.
4
Add the remaining 15 g of butter. Sprinkle in the flour and stir for 1 minute, until the mixture smells lightly nutty. Gradually whisk in the hot stock, then the cream, until smooth.
5
Simmer the sauce for 4 to 5 minutes, stirring often, until it coats the back of a spoon. Stir in the soy sauce and black pepper, then taste and adjust seasoning if needed.
6
Fold the drained green beans into the sauce, then transfer everything to the prepared baking dish. Spread the mixture evenly and cover the surface with the fried onions.
Green bean casserole assembled with crispy onions before baking AI-generated image
7
Bake uncovered for 20 to 25 minutes, until the sauce bubbles around the edges and the onions are deep golden. Rest for 5 minutes, then serve hot.
Golden bubbling green bean casserole ready to serve AI-generated image

Why this recipe works

Blanching preserves the beans' color and snap, while a concentrated mushroom sauce adds savory depth without the heaviness of canned soup. The final bake melds the flavors and turns the onion topping crisp and fragrant.

Storage and reheating

How to store it

Refrigerate leftovers in a covered container for up to 3 days. For best texture, store extra fried onions separately if making the casserole ahead.

How to reheat it

Reheat covered at 175°C until hot throughout, about 20 minutes, then uncover and bake for 5 minutes to re-crisp the topping. Individual portions may be microwaved, though the topping will soften.

Nutrition / serving

361kcal
7.48 gprotein
29.77 gcarbs
25.10 gfat
P
Pantryvale editorial kitchen
Recipe prepared for publication with complete ingredients and ordered cooking steps.
Published 14 Aug 2026 · updated 14 Aug 2026