Cheesy Green Bean Casserole with Frozen Green Beans

Overhead photo of cheesy green bean casserole in a white casserole dish next to a serving spoon and small dish of red pepper flakes.

Cheesy Green Bean Casserole with Frozen Green Beans

We're diving into the world of holiday comfort food with our Cheesy Green Bean Casserole. This heavenly dish is baked to perfection, offering a delightful mix of creamy, crunchy, and cheesy textures that your family will adore.

Course Side Dish

Cuisine American

Diet Vegetarian

Keyword Holiday Sides

Prep Time 15

Cook Time 30

Total Time 45

Servings

Calories 294kcal

Author Wendy Polisi

Ingredients

20 ounces frozen green beans
2 tablespoons butter
8 ounces sliced button mushrooms
1 onion diced
1 teaspoon minced garlic
1 teaspoon dried thyme
¼ cup all purpose flour
¾ cup chicken or vegetable broth
1 ½ cups half and half
2 cups shredded cheddar cheese divided
1 teaspoon sea salt
¼ teaspoon freshly ground black pepper
1 cup fried onions

Instructions

Preheat the oven to 400° F. Spray a 13 x 9 casserole dish with cooking spray, and arrange the green beans in the bottom of it.
Melt the butter in a large dutch oven over medium-high heat. Add the mushrooms and onion and cook for 8 minutes.
Add the garlic and thyme, and flour and cook for 1 more minute.
Stir in the broth until combined, and then add the half and half. Bring to a simmer over medium heat.
Reduce the heat to low, and stir in 1 cup of the cheese, salt, and pepper. Cook until the cheese melts.
Pour the sauce over the green beans, and top with the remaining cup of cheese.
Bake for 15 minutes. Add the onions, and bake for 5 more minutes.
Serve warm.

Nutrition