Egg and Biscuit Breakfast Casserole

Elevate Your Mornings with Comfort: Egg and Biscuit Breakfast Casserole Extravaganza

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Breakfast is the most important meal of the day, and what better way to start it than with a dish that combines comfort, flavor, and convenience? The Egg and Biscuit Breakfast Casserole is a culinary masterpiece that transforms simple ingredients into a hearty and satisfying morning experience. This casserole, boasting fluffy eggs, flaky biscuits, and savory sausage, not only tantalizes your taste buds but also streamlines your morning routine. Join us as we delve into the step-by-step process of creating this breakfast extravaganza that promises to make every morning extraordinary.

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For the Casserole Base:

  • 1 can (16 oz) refrigerated biscuits, cut into quarters
  • 8 large eggs
  • 1 cup milk
  • 1 teaspoon Dijon mustard
  • Salt and black pepper to taste
  • 1 pound breakfast sausage, cooked and crumbled
  • 1 cup shredded cheddar cheese
  • 1/2 cup diced bell peppers
  • 1/4 cup chopped green onions

For Topping:

  • 1/2 cup shredded mozzarella cheese
  • Fresh parsley for garnish (optional)


  1. Prepare the Casserole Base:
    • Preheat your oven to 375°F (190°C).
    • Grease a 9×13-inch baking dish.
    • Spread the quartered biscuits in an even layer in the baking dish.
  2. Whisk the Egg Mixture:
    • In a large bowl, whisk together eggs, milk, Dijon mustard, salt, and black pepper until well combined.
  3. Layer the Ingredients:
    • Pour the egg mixture over the biscuits, ensuring they are well coated.
    • Sprinkle the cooked and crumbled breakfast sausage, shredded cheddar cheese, diced bell peppers, and chopped green onions evenly over the eggs and biscuits.
  4. Top with Mozzarella:
    • Sprinkle shredded mozzarella cheese over the top of the casserole for an extra layer of gooey goodness.
  5. Bake to Golden Perfection:
    • Bake in the preheated oven for 25-30 minutes or until the casserole is set, the biscuits are golden brown, and the top is lightly browned.
  6. Garnish and Rest:
    • Allow the casserole to rest for a few minutes before garnishing with fresh parsley, if desired.
  7. Slice and Serve:
    • Slice into squares, serve warm, and relish the delightful combination of fluffy eggs, flaky biscuits, and savory goodness.

Cook Notes:

  • Biscuit Consistency: Ensure the biscuits are cut into quarters to allow for even distribution throughout the casserole.
  • Sausage Selection: Choose your preferred breakfast sausage, whether it’s mild, spicy, or a flavored variety, to customize the casserole to your taste.
  • Bell Pepper Options: Experiment with different colored bell peppers for a visually appealing casserole.
  • Make-Ahead Tip: Prepare the casserole the night before and refrigerate, allowing for a quick and easy bake in the morning.


Vegetarian Delight:

  • Omit the sausage and add sautéed mushrooms, spinach, and cherry tomatoes for a vegetarian version.

Spicy Twist:

  • Incorporate diced jalapeños or a dash of hot sauce to add a spicy kick to the casserole.

Ham and Cheese Upgrade:

  • Swap the sausage for diced ham and add your favorite cheese blend for a classic ham and cheese variation.

Keto Version:

  • Substitute refrigerated biscuits with a keto-friendly biscuit alternative made from almond or coconut flour.
  • Use unsweetened almond or coconut milk in place of regular milk in the egg mixture.
  • Choose keto-friendly sausage without added sugars and opt for low-carb vegetables in the casserole.

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Low-Carb Version:

  • Replace refrigerated biscuits with a low-carb biscuit alternative or use cauliflower rice for the base.
  • Use a low-carb milk substitute in the egg mixture.
  • Customize the casserole with low-carb vegetables such as zucchini, broccoli, or spinach.


In the hustle and bustle of modern life, the Egg and Biscuit Breakfast Casserole stands out as a beacon of morning comfort and convenience. It effortlessly combines familiar ingredients into a dish that not only satisfies your taste buds but also simplifies your morning routine. So, embrace the layers of fluffy eggs, flaky biscuits, and savory sausage, and make each breakfast a celebration with this irresistible and versatile breakfast extravaganza!

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