Best Ever Breakfast Casserole Recipe

Ingredients for Best Ever Breakfast Casserole

• 6 slices cooked bacon, crumbled
• Green Onion
• 6 tablespoons butter
• Egg
• Sliced Mushrooms
• 3/4 teaspoon salt
• Black Pepper
• 1/4 cup all-purpose flour
• 2 cups milk
• Sharp Cheddar Cheese

How to Make Best Ever Breakfast Casserole

1. **Make the Cheese Sauce:** Melt 4 tablespoons of butter over medium heat in a saucepan. Whisk in 1/4 cup all-purpose flour and cook for 1-2 minutes, stirring constantly, until bubbly.
2. Gradually whisk in 2 cups of milk until smooth. Bring to a simmer, stirring frequently, until the sauce thickens (about 5 minutes).
3. Remove from heat and stir in 2 cups of shredded cheddar cheese, 1/2 teaspoon salt, and 1/4 teaspoon black pepper until melted and smooth.
4. **Prepare the Casserole Filling:** In a large skillet, sauté 1/2 cup chopped onion in 2 tablespoons of butter until softened.
5. Whisk in 6 large eggs and scramble until just set; do not overcook.
6. Add 1 cup sliced mushrooms, 1/4 teaspoon salt, and 1/8 teaspoon black pepper.
7. Stir in the prepared cheese sauce and 6 slices of cooked and crumbled bacon.
8. **Assemble and Bake:** Pour the mixture into a lightly greased 9x13 inch baking dish.
9. Cover with plastic wrap and chill in the refrigerator for at least 2 hours, or preferably overnight.
10. Preheat oven to 350°F (175°C).
11. Bake uncovered for 30-35 minutes, or until heated through and lightly golden brown.
12. Let stand for 10 minutes before serving. Serves 8.