Breakfast Casserole with Biscuits

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This Breakfast Casserole with Biscuits has everything you love about breakfast wrapped in one cozy, delicious casserole: fluffy biscuits, savory sausage, gooey melted cheese, and creamy eggs all baked to perfection.

How to make Breakfast Casserole with Biscuits

A Breakfast Casserole with Biscuits is a warm, baked breakfast dish where soft, fluffy biscuit dough is combined with classic breakfast ingredients—then cooked together in one pan until everything is golden and set.

Ingredients

• 1 can of refrigerated biscuits (e.g., Pillsbury, approx. 8 biscuits)
• 6 large eggs
• 1 cup milk
• 1 lb breakfast sausage, cooked and crumbled (or substitute with bacon or diced ham)
• 1 cup shredded cheese (cheddar is classic, but you can use mozzarella, Monterey Jack, or a mix)
• 1/2 cup diced bell peppers (optional, for added color and flavor)
• 1/4 cup diced onions (optional)
• 1/2 teaspoon garlic powder
• 1/2 teaspoon salt
• 1/4 teaspoon ground black pepper
• 1 tablespoon chopped parsley (optional, for garnish)

Instructions

1. Preheat your oven to 350°F (175°C). Spray a 9×13-inch baking dish with cooking spray or grease it lightly with butter to prevent sticking.
2. In a large skillet, cook the sausage over medium heat, breaking it into crumbles with a spatula, until fully browned (about 6-8 minutes). If using bacon, cook until crispy and crumble it when cooled. Drain any excess grease and set aside.
3. Cut the refrigerated biscuits into quarters (or eighths for smaller pieces). Arrange the biscuit pieces evenly across the bottom of the prepared baking dish.
4. Spread the cooked sausage (or bacon/ham) evenly over the biscuit pieces. Next, sprinkle the shredded cheese on top. If you’re adding diced vegetables like bell peppers or onions, this is also the time to add them.
5. In a medium mixing bowl, whisk together the eggs, milk, garlic powder, salt, and pepper until fully combined. Pour this mixture evenly over the biscuits, sausage, and cheese in the baking dish, making sure all the biscuit pieces get saturated.
6. Place the baking dish in the preheated oven and bake for 30-35 minutes, or until the eggs are fully set and the biscuits are golden brown on top. To check, insert a toothpick in the center — it should come out clean when done.
7. Remove the casserole from the oven and let it cool for 5 minutes. Sprinkle with freshly chopped parsley, if desired, for a pop of color. Serve warm and enjoy!

Tips for Success

• Prevent the Biscuits from Getting Soggy: Ensure the biscuits are evenly spread out without being overcrowded. This allows them to bake fully and prevents them from being too doughy at the bottom.
• Customize as You Like: This casserole is highly versatile! Add diced jalapeños for spice, swap the sausage for lean turkey sausage, or include veggies like zucchini, mushrooms, or spinach for a more nutrient-packed meal.
• Use Pre-Cooked Ingredients: Make sure any meats or veggies are fully cooked before layering them into the casserole. This ensures even cooking and great flavor throughout the dish.
• Make It Ahead: You can assemble this casserole the night before and refrigerate it. In the morning, pop it into the oven and bake as directed. Perfect for busy mornings or holiday breakfasts!

Ingredients Substitutes

One of the best things about a Breakfast Casserole with Biscuits is how versatile it is. Don’t have all the ingredients on hand? No problem! There are plenty of ingredient substitutions you can make without sacrificing flavor.

1. Biscuits:

The biscuits act as the base of the casserole, giving it that flaky, buttery texture. If you don’t have refrigerated biscuits on hand, here’s what you can use instead:

Substitutes:

• Homemade Biscuits: If you have flour, butter, and baking powder, you can easily whip up homemade biscuit dough. Roll it thin, cut it into small squares, and use it as a replacement.
• Crescent Roll Dough: Crescent roll dough is another great option; unroll, cut into pieces, and layer as you would with biscuits.
• Toast or Bread Cubes: Stale bread or cubed sandwich bread can act as a soft, buttery replacement. Choose a sturdy bread like sourdough or brioche for extra flavor.
• Hash Browns or Tater Tots: For a gluten-free twist, skip the biscuits entirely and use a layer of hash browns or tater tots at the base.
• Puff Pastry: This is ideal if you want the casserole to be extra flaky and indulgent.

2. Eggs:

Eggs are essential for binding the Breakfast Casserole with Biscuits, but there are ways to replace them, particularly for vegans or those with egg allergies.

Substitutes:

• Egg Substitutes (Store-Bought): Commercial egg replacements like JUST Egg or Bob’s Red Mill Egg Replacer work well.
• Flaxseed or Chia Eggs: For each egg, mix 1 tablespoon of ground flaxseed or chia seeds with 2.5 tablespoons of water. Let it sit for 5 minutes to gel before using.
• Silken Tofu: Blend 1/4 cup of silken tofu per egg to create a creamy and binding texture.
• Yogurt or Sour Cream (for texture): Use 1/4 cup of plain yogurt or sour cream per egg for richness (best paired with other egg substitutes to maintain structure).

3. Breakfast Sausage or Bacon:

These proteins add savory flavor, but there are plenty of substitutes if you’re out of sausage or looking for vegetarian options.

Substitutes:

• Ham: Diced or shredded ham works well in place of sausage.
• Turkey or Chicken Sausage: A lighter alternative that’s just as flavorful.
• Ground Beef or Turkey: Swap sausage for browned and seasoned ground meat. Add herbs like thyme and sage for a sausage-like flavor.
• Vegetarian Sausage or Bacon: Plant-based meat alternatives (like Impossible or Beyond Meat sausage) replicate the flavor and texture of traditional sausage.
• Sautéed Veggies: For a vegetarian option, substitute sausage with hearty veggies like sautéed mushrooms, roasted peppers, and spinach.

4. Shredded Cheese:

Cheese adds creaminess and richness to the casserole, but you can easily swap in different types based on your preference.

Substitutes:

• Any Shredded Cheese: Swap cheddar for mozzarella, pepper jack, Monterey Jack, Swiss, or Gouda.
• Vegan Cheese: Use dairy-free shredded cheese blends like Daiya or Violife for a plant-based option.
• Cream Cheese: Add dollops of cream cheese on top for a creamy, tangy twist if you don’t have shredded cheese.
• Cottage Cheese or Ricotta: Mix small curd cottage cheese or ricotta with the eggs for added creaminess.

5. Milk:

Milk combines with eggs to create a custard-like texture. If you’re out of milk or avoiding dairy, there are plenty of alternatives.

Substitutes:

• Non-Dairy Milk: Almond milk, oat milk, soy milk, or cashew milk work wonderfully. Choose unsweetened versions to avoid adding sweetness to the dish.
• Heavy Cream or Half-and-Half: For a richer casserole, replace milk with heavy cream or half-and-half.
• Broth: For extra savory flavor, use chicken, vegetable, or even beef broth. This works best when paired with ingredients that are already creamy, like cheese or eggs.
• Plain Yogurt or Sour Cream: Thin with a little water to create the right consistency before mixing with the eggs.

Final Thoughts

This Breakfast Casserole with Biscuits is the perfect example of a recipe that’s simple to make but delivers big on flavor and comfort.

More Biscuit Recipes:

• Sausage & Egg Biscuit Recipe