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
Keyword casseroles, green beans
Prep Time 15 minutesminutes
Cook Time 40 minutesminutes
Total Time 55 minutesminutes
Servings 8
Calories 228kcal
Author angela@mealstreetkitchen
Ingredients
2tablespoonsolive oil
2tablespoonsshallots, minced
2clovesfresh garlic, minced
2cupssliced crimini mushrooms
1cupsliced shiitake or chanterelle mushrooms
3tablespoonsbutter
3tablespoonsflour
1/4cupdry white wine
2cupshalf and half
2teaspoonskosher salt
1/2teaspoonblack pepper
212 ounce packagesfrozen french green beans (hericots verts)
1 1/2cupscrisp fried onions (I used french's)
1/3cupgruyere 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.