How Long Does A Green Bean Casserole Take To Cook

Nutrition Facts (per serving)
286	Calories
17g	Fat
30g	Carbs
8g	Protein

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Nutrition Facts
Servings: 6
Amount per serving
Calories	286
% Daily Value*
Total Fat 17g	22%
Saturated Fat 9g	45%
Cholesterol 44mg	15%
Sodium 895mg	39%
Total Carbohydrate 30g	11%
Dietary Fiber 7g	26%
Total Sugars 12g
Protein 8g
Vitamin C 19mg	94%
Calcium 118mg	9%
Iron 3mg	18%
Potassium 707mg	15%
*The % Daily Value (DV) tells you how much a nutrient in a food serving contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.

(Nutrition information is calculated using an ingredient database and should be considered an estimate.)

The humble green bean casserole has long been a favorite side dish that shows up on millions of tables every Thanksgiving. Created in 1955 by Campbell's Kitchen, the original green bean casserole typically contains condensed soup and a canned fried onion ring topping. This version has the same great flavors, but it comes together with fresh vegetables, a homemade sauce, and crispy baked shallots. This green bean casserole is an ideal choice for the cook who likes to avoid processed foods.

"Garden-fresh green beans deserve this casserole! Everything is made from scratch and you can taste the difference. It's fun to make, especially if you enjoy multitasking and cooking a few elements simultaneously. Biting into the crunchy shallots are a nice surprise, and the creamy mushroom sauce is perfect (and useful for other recipes)." —Colleen Graham

For the Crispy Shallot or Onion Topping:

2 cups thinly sliced shallots (about 2 large shallots), or onions
3 tablespoons all-purpose flour
3/4 teaspoon kosher salt
1 teaspoon vegetable oil

For the Casserole:

3 teaspoons kosher salt, divided
1 1/2 pounds fresh green beans, trimmed, cut into 1-inch lengths (about 8 cups)
2 ounces (4 tablespoons) unsalted butter
1 pound mushrooms, cleaned and sliced
1/2 teaspoon freshly ground black pepper
1 dash freshly grated nutmeg
4 tablespoons all-purpose flour
3/4 cup low-sodium or unsalted chicken stock
1 cup light cream, or half-and-half
Cooking spray, for greasing dish

Gather the ingredients and preheat the oven to 375 F.

The Spruce / Diana Rattray
In a bowl, combine the sliced shallots with 3 tablespoons of flour and 3/4 teaspoon of kosher salt. Toss to combine.

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Oil a large baking sheet with the 1 teaspoon of vegetable oil. Spread the floured shallots out on the pan in a single layer. Bake the shallots for about 35 minutes, turning every 5 minutes.

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Remove the browned shallots from the oven and set aside.

The Spruce / Diana Rattray
While the shallots are baking, cook the green beans. Bring about 2 quarts of water and 2 teaspoons of salt to a boil. Add the green beans and cook for about 7 to 8 minutes, or until tender. Drain well.

The Spruce / Diana Rattray
Melt the butter in a large skillet over medium heat. Add the mushrooms, remaining 1 teaspoon of kosher salt, black pepper, and nutmeg; sauté for 3 minutes. Sprinkle 4 tablespoons of flour over the mushrooms and stir to combine. Continue to cook, constantly stirring, for 2 minutes.

The Spruce / Diana Rattray
Gradually add the chicken stock and cream to the mushrooms while stirring constantly. Continue to cook and stir until the sauce is thickened, about 5 minutes.

The Spruce / Diana Rattray
In a large bowl, combine the green beans with the mushroom sauce and about 1/2 cup of the baked shallots. Stir to blend the ingredients.

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Turn the green bean mixture into a lightly greased casserole and sprinkle with the remaining crispy baked shallots.

The Spruce / Diana Rattray
Bake the casserole in the preheated oven for 20 minutes, or until the filling is hot and bubbling.

The Spruce / Diana Rattray

Glass Bakeware Warning

For premade casseroles or leftovers that are in a glass baking dish and have been refrigerated, do not place directly into a hot oven as the glass can shatter. Instead, place any cold glass bakeware into a cold oven to warm up while it preheats. Or, allow the bakeware to rest outside of the fridge for 30 minutes to reach room temperature while the oven preheats.

Tip

To save time, use 1 1/2 pounds of thawed frozen cut green beans, or use canned French fried onion rings or store-bought crispy fried shallots.

Recipe Variations

Lighten up the casserole by reducing the butter to two tablespoons and replacing the cream with whole or 2 percent milk.
Add 1/2 cup of shredded cheddar cheese to the cooked sauce and stir until melted. Top the casserole with about 1/2 cup of shredded cheese before you add the crispy shallots or onions.
Cook 2 to 3 strips of bacon and drain well. Crumble the bacon and add it to the sauce mixture along with the green beans.
Add about 1/3 cup of chopped red bell pepper to the sauce along with the green beans.
For a vegan green bean casserole, use olive oil or vegan butter, replace the chicken stock with vegetable broth, and replace the cream with unsweetened almond milk.

Can You Prepare Green Bean Casserole Ahead of Time?

The green bean casserole may be prepared a day in advance. Prepare and bake the shallots and set them aside. Prepare the green beans and sauce as directed, up to the baking step, and fold in 1/2 cup of the crispy shallots. Cover the baking dish and refrigerate the casserole. Store the remaining crispy shallots in a covered container or food storage bag at room temperature. When it's time to bake, sprinkle the crispy shallots over the casserole and bake as directed.
You can also freeze the prepared casserole. Bake only enough shallots for the filling. Prepare the green beans and filling as directed and fold in the shallots and turn the mixture into a baking dish. Cover the baking dish and freeze the casserole for up to 2 weeks. About 45 minutes before you plan to bake the casserole, take it out of the freezer to thaw, then prepare and bake the shallots; set aside. Cover the casserole with foil and bake it in a 350 F oven for 45 minutes. Remove the foil and top with the shallots. Continue to bake, uncovered, for 20 to 25 minutes, or until the casserole is hot and bubbly and the shallots are crisp.

Why Is My Green Bean Casserole Runny?

The homemade mushroom sauce in this green bean casserole should be thick enough to coat the green beans. If the sauce is too runny, the casserole will be watery. Make sure to add the right amount of flour, which acts as the thickener, and let it cook down on the stovetop until it's thicker than a creamy soup.

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