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Cheesy Sausage Biscuit Breakfast Casserole

There is something wonderfully comforting about a warm breakfast casserole coming out of the oven—especially when it combines flaky biscuits, savory sausage, creamy eggs, and plenty of melted cheese. Cheesy Sausage Biscuit Breakfast Casserole is the kind of hearty dish that turns an ordinary morning into something special without requiring you to stand over the stove preparing several separate dishes.

This casserole is especially convenient for weekends, holidays, brunch gatherings, and busy mornings because most of the ingredients can be assembled in one baking dish. As it cooks, the biscuits become golden around the edges while the egg mixture settles between layers of sausage and cheese, creating a filling breakfast with plenty of flavor in every bite.

Why You’ll Love This Breakfast Casserole

The appeal of this recipe is its simplicity. You get several breakfast favorites—biscuits, sausage, eggs, and cheese—in a single dish.

The sausage provides a rich, savory flavor, while the eggs create a soft and tender center. Cheddar cheese melts throughout the casserole, adding creaminess and a slightly sharp flavor. The biscuits bring everything together with their buttery, comforting texture.

It’s also an easy recipe to customize. You can add vegetables, change the cheese, use a different sausage, or adjust the seasoning to suit your family’s taste.

Ingredients

For a generously sized casserole, you’ll need:

1 pound breakfast sausage
1 can refrigerated biscuit dough, about 16 ounces
8 large eggs
1 cup whole milk
2 cups shredded sharp cheddar cheese
1/2 teaspoon salt
1/4 teaspoon black pepper
1/2 teaspoon garlic powder
1/2 teaspoon onion powder
1 tablespoon butter or cooking spray for the baking dish

Optional Additions

For extra flavor or variety, consider adding:

1/2 cup diced bell peppers
1/2 cup diced onions
1/2 cup sliced mushrooms
1/4 teaspoon smoked paprika
A small handful of chopped green onions
Monterey Jack, mozzarella, or pepper Jack cheese instead of some of the cheddar

Step-by-Step Instructions

Step 1: Prepare the Oven and Baking Dish

Begin by preheating your oven to 375°F (190°C).

Lightly grease a 9-by-13-inch baking dish with butter or cooking spray. Greasing the dish helps prevent the eggs and melted cheese from sticking and makes serving much easier later.

Set the prepared dish aside while you prepare the filling.

Step 2: Cook the Sausage

Place a large skillet over medium heat and add the breakfast sausage.

Break the sausage into small pieces with a wooden spoon or spatula as it cooks. Continue cooking until it is browned and fully cooked.

If your sausage produces a significant amount of grease, carefully drain the excess. You want enough moisture and flavor to remain, but too much grease can make the finished casserole heavy.

If you’re adding diced onions or bell peppers, you can sauté them with the sausage until they’re tender.

Step 3: Cut the Biscuits

Open the refrigerated biscuit dough and separate the biscuits.

Cut each biscuit into smaller pieces, roughly into quarters. The smaller pieces make it easier to distribute the biscuit dough throughout the casserole and allow the egg mixture to surround them.

Arrange the biscuit pieces evenly across the bottom of the prepared baking dish.

Don’t worry if there are small spaces between the pieces—they will expand as they bake.