Best Ever Breakfast Casserole Recipe

This incredibly delicious breakfast casserole recipe is a family favorite, perfected by my sister! Prepare it two days in advance for a stress-free brunch or weekend breakfast. Creamy cheese sauce, savory scrambled eggs, and crispy bacon combine for a mouthwatering dish that will impress your family and friends. Perfect for holidays or lazy weekend mornings!

Prep Time 30 mins
Cook Time 45 mins
Calories 526.8 kcal
Protein 42g
Rating Be the first
Best Ever Breakfast Casserole 140

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Forktionary editorial kitchen team

The Forktionary Kitchen Team

Adapted from Food.com, then tested & standardized by Forktionary.

Ingredients for Best Ever Breakfast Casserole

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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.

Nutrition Information (Approximate per serving)

Sodium

40 g

Sugar

2g

Fat

97g

Carbs

2g

Frequently Asked Questions

How long does it take to make Best Ever Breakfast Casserole?

Best Ever Breakfast Casserole takes about 75 minutes from start to finish — roughly 30 minutes to prepare and 45 minutes to cook.

How many calories are in Best Ever Breakfast Casserole?

Best Ever Breakfast Casserole has approximately 526.8 calories per serving, with about 42 g protein, 2 g carbohydrates and 70 g fat.

What ingredients do I need for Best Ever Breakfast Casserole?

The key ingredients for Best Ever Breakfast Casserole are Bacon, Green Onion, Butter, Egg, Sliced Mushrooms, Salt. See the full list with measurements above.

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