French Green Bean and Mushroom Casserole

French Green Bean and Mushroom Casserole

This French Green Bean and Mushroom Casserole is a delicious combination of tender french green beans, earthy mushrooms and crispy onions cooked in a white wine cream sauce and then topped with more crispy onions and gruyere.

Course Dinner, Side Dish

Cuisine American, French inspired

Diet Vegetarian

Keyword casseroles, green beans

Prep Time 15

Cook Time 40

Total Time 55

Servings

Calories 228kcal

Author angela@mealstreetkitchen

Equipment

large skillet
large casserole dish

Ingredients

2 tablespoons olive oil
2 tablespoons shallots, minced
2 cloves fresh garlic, minced
2 cups sliced crimini mushrooms
1 cup sliced shiitake or chanterelle mushrooms
3 tablespoons butter
3 tablespoons flour
1/4 cup dry white wine
2 cups half and half
2 teaspoons kosher salt
1/2 teaspoon black pepper
2 12 ounce packages frozen french green beans (hericots verts)
1 1/2 cups crisp fried onions (I used french's)
1/3 cup gruyere cheese, grated

Instructions

Preheat oven to 350 degrees F.
In a large skillet, heat the 2 tablespoons olive oil. Add shallots and garlic, saute' for a couple of minutes until soft. Add all of the mushrooms and saute' until cooked and lightly browned. Add the white wine, bring to a boil and reduce by half. Remove from skillet and set aside.
In the same skillet add butter and flour, cook stirring often, over med/low heat until very light golden brown. Slowly whisk in the half and half and bring to a boil then reduce heat to low. Add mushroom mixture and season with salt and pepper.
In a large casserole dish, add the thawed green beans and 1/2 of the crispy onions (3/4 cup). Pour mushroom/cream mixture over the top and stir to evenly coat.
Cover with foil and bake in the preheated oven for 30 minutes.
Remove foil and top the casserole with the rest of the crispy onions and grated cheese. Place back in the oven and bake uncovered for 10-15 minutes until crisped and bubbly. Serve.

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