Easy Breakfast Biscuit Casserole is the kind of comforting breakfast that makes everyone want to gather around the table. With a soft biscuit base, savory breakfast sausage, fluffy seasoned eggs, and plenty of melted cheddar cheese, this hearty casserole turns simple everyday ingredients into a satisfying one-pan meal.

It is especially convenient because you can prepare it ahead of time and bake it when you’re ready. Whether you’re making breakfast for your family, hosting a weekend brunch, or preparing a holiday morning meal, this casserole is an easy and delicious choice.

The combination of buttery biscuits, savory sausage, creamy eggs, and melted cheese creates a comforting Southern-inspired breakfast in every bite.

Why You’ll Love This Breakfast Casserole

This recipe is popular because it is:

Easy to prepare
Made with simple ingredients
Hearty and filling
Cheesy and comforting
Great for families
Perfect for brunch
Easy to customize
Excellent for make-ahead breakfasts
Convenient for holidays and gatherings
Delicious as leftovers

Instead of preparing biscuits, eggs, sausage, and cheese separately, everything is layered together and baked in one dish.

Ingredients

For the Biscuit Base

1 can refrigerated biscuits of your choice

Refrigerated biscuits create the soft, buttery foundation of the casserole. You can use your favorite variety, depending on what you have available.

The biscuits bake underneath the egg and sausage mixture, creating a hearty base that complements the creamy filling.

Nonstick cooking spray

Nonstick spray helps prevent the casserole from sticking to the baking dish and makes serving and cleanup easier.

For the Breakfast Filling

1 pound breakfast sausage

Breakfast sausage provides the main savory flavor in the casserole. As it cooks, it becomes browned and flavorful, adding richness to every serving.

You can use your preferred breakfast sausage, whether mild or seasoned.

8 large eggs

The eggs create the fluffy, tender layer that holds the casserole together.

Whisking them thoroughly with the milk and seasonings helps create an evenly seasoned filling.

½ cup milk

Milk makes the egg mixture softer and more tender while adding a little creaminess.

1 teaspoon salt

Salt enhances the flavors of the eggs, sausage, biscuits, and cheese.

Because breakfast sausage and cheddar can already contain salt, you can adjust the amount according to the ingredients you use.

½ teaspoon black pepper

Black pepper adds mild warmth and balances the richness of the eggs, sausage, and cheese.

½ teaspoon garlic powder

Garlic powder adds subtle savory depth to the egg mixture.

½ teaspoon onion powder

Onion powder reinforces the savory flavor without adding extra moisture to the casserole.

For the Cheese

1½ to 2 cups shredded cheddar cheese

Cheddar provides the rich, cheesy topping that makes this casserole so satisfying.

You can use mild, medium, or sharp cheddar depending on how strong you want the cheese flavor to be.

For an especially cheesy casserole, use the full 2 cups.

Optional Add-Ins

The basic recipe is delicious on its own, but it is also easy to customize.

Consider adding:

½ cup diced onion
½ cup diced bell pepper
½ cup sliced mushrooms
½ cup cooked bacon, chopped
½ cup diced ham
½ cup cooked hash browns
¼ teaspoon paprika
Chopped green onions for garnish

These additions allow you to transform the same basic casserole into several different breakfast combinations.

Equipment Needed

You’ll need:

9×13-inch baking dish
Large skillet
Large mixing bowl
Whisk
Spatula or wooden spoon
Measuring cups and spoons
Aluminum foil, if needed

How to Make Easy Breakfast Biscuit Casserole

Step 1: Preheat the Oven

Preheat your oven to 350°F (175°C).

Lightly coat a 9×13-inch baking dish with nonstick cooking spray.

Make sure the bottom and sides are coated well so the casserole will be easier to remove after baking.

Step 2: Cook the Breakfast Sausage

Place a large skillet over medium heat.

Add the 1 pound breakfast sausage.

Cook until the sausage is completely browned and no longer pink, breaking it apart into small pieces as it cooks.

If you are adding diced onion or bell pepper, you can cook them with the sausage until softened.

Once the sausage is fully cooked, drain any excess grease.

Set the sausage aside while you prepare the remaining layers.

Step 3: Create the Biscuit Base

Open the can of refrigerated biscuits.

Arrange the biscuits across the bottom of the prepared baking dish.

Depending on the size of the biscuits, you can leave them whole or gently press them flatter so they cover more of the bottom.

Try to distribute them as evenly as possible.

The biscuits will become the soft, buttery foundation of the casserole.

Step 4: Add the Sausage

Evenly distribute the cooked sausage over the biscuit layer.

Spread it from edge to edge so that every portion contains some of the savory sausage.

If you’re using cooked bacon, ham, or hash browns, add them at this stage.

Step 5: Prepare the Egg Mixture

In a large bowl, whisk together:

8 large eggs
½ cup milk
1 teaspoon salt
½ teaspoon black pepper
½ teaspoon garlic powder
½ teaspoon onion powder

Whisk until the eggs are completely combined and the mixture looks smooth.

If desired, add ¼ teaspoon paprika for a little extra color and flavor.

Step 6: Pour the Eggs Over the Casserole

Slowly pour the egg mixture over the sausage and biscuits.

Pour evenly across the entire dish.

Allow the egg mixture to flow down into the spaces between the biscuits. This helps create a cohesive casserole instead of separate layers.

Step 7: Add the Cheese

Sprinkle 1½ to 2 cups shredded cheddar cheese evenly over the top.

For a lighter cheese layer, use 1½ cups.

For maximum cheesy goodness, use the full 2 cups.

You can also substitute or combine cheddar with:

Monterey Jack
Colby Jack
Pepper Jack

Step 8: Bake

Place the casserole in the preheated 350°F (175°C) oven.

Bake for approximately 35–45 minutes.

The casserole is ready when:

The eggs are fully set.
The biscuits are cooked through.
The cheese is melted and golden.
The center no longer jiggles significantly when gently shaken.

If the top begins browning too quickly, loosely cover the casserole with aluminum foil for the remainder of the baking time.

Because ovens and baking dishes can vary, begin checking the casserole toward the earlier end of the suggested baking time.

Step 9: Let It Rest

Remove the casserole from the oven and allow it to rest for 5–10 minutes before slicing.

This short resting period allows the layers to settle and makes the casserole easier to cut into neat portions.

How to Tell When the Casserole Is Done

The center should look set rather than liquid or excessively wet.

The biscuits should be fully baked, and the cheese should be melted.

If you gently move the baking dish, the center should not have a loose, liquid movement.

If you’re uncertain, continue baking for a few additional minutes and check again.

Delicious Variations

Bacon and Cheddar Biscuit Casserole

Replace the sausage with ½ cup cooked chopped bacon, or use bacon in addition to the sausage for an especially hearty breakfast.

Ham and Cheese Biscuit Casserole

Use ½ cup diced ham instead of sausage.

This is an excellent way to use leftover cooked ham.

Southwestern Breakfast Casserole

Add diced green chiles, Pepper Jack cheese, salsa, and a little chili powder.

Serve with sour cream or fresh cilantro.

Sausage and Hash Brown Casserole

Add ½ cup cooked hash browns between the biscuit and sausage layers.

This makes the casserole especially hearty and filling.

Vegetable Breakfast Casserole

For a meatless variation, add:

Spinach
Mushrooms
Bell peppers
Onions
Tomatoes

Pair the vegetables with plenty of cheese for a flavorful vegetarian breakfast.

Make-Ahead Instructions

One of the best features of this recipe is that it can be prepared ahead of time.

Assemble the casserole according to the recipe.

Cover it tightly and refrigerate it overnight.

The following morning, remove it from the refrigerator while the oven preheats.

Bake at 350°F (175°C) as directed, allowing a few extra minutes if needed because the casserole is starting cold.

This makes it particularly useful for:

Christmas morning
Holiday brunches
Weekend guests
Family gatherings
Busy mornings

What to Serve With Breakfast Biscuit Casserole

This casserole is already a complete and filling breakfast, but a few fresh sides make the meal even better.

Serve it with:

Fresh fruit
Fresh berries
Orange juice
Coffee
Sliced tomatoes
Fresh avocado
Salsa
Hot sauce
Country gravy

A fresh fruit salad is especially nice alongside the rich, savory casserole.

Storage

Allow leftovers to cool appropriately before storing.

Place them in an airtight container and refrigerate for 3–4 days.

Individual portions are convenient for quick breakfasts throughout the week.

How to Reheat

For a quick serving, place a portion in the microwave and heat until warmed through.

You can also reheat the casserole in a 325°F oven until hot.

For larger portions, oven reheating generally provides a better texture.

Freezing Instructions

The casserole can also be frozen.

Allow it to cool completely before freezing.

Cut it into individual portions and wrap each piece tightly in plastic wrap and foil, or place the portions into freezer-safe containers.

Freeze for up to 2–3 months.

For best results, thaw overnight in the refrigerator before reheating until hot.

Frequently Asked Questions

Can I use any refrigerated biscuits?

Yes. Your favorite refrigerated biscuits can be used. The size and thickness of the biscuits may affect the final texture and baking time.

Can I use homemade biscuits?

Yes. Homemade biscuit dough can also work, although you may need to adjust the amount depending on the size of the biscuits.

Can I use turkey sausage?

Yes. Turkey sausage can be substituted if you prefer it.

Keep in mind that the flavor and fat content may differ from traditional breakfast sausage.

Can I make this casserole without meat?

Absolutely. Leave out the sausage and add vegetables such as mushrooms, spinach, onions, bell peppers, or tomatoes.

Can I use a different cheese?

Yes. Cheddar works particularly well, but Monterey Jack, Colby Jack, Pepper Jack, or a combination can also be delicious.

Why is my casserole watery?

Excess moisture can come from vegetables, sausage grease, or undercooked eggs.

Make sure cooked sausage is drained well and vegetables are not excessively wet before adding them.

Also allow the casserole to bake until the center is fully set.

Why are my biscuits not fully cooked?

The biscuits need enough time to bake underneath the moist egg mixture.

If the center remains underbaked, continue baking until the biscuits are cooked through and the eggs are set.

Can I assemble it the night before?

Yes. Cover the assembled casserole tightly and refrigerate overnight.

Because it starts cold, you may need to add a few minutes to the baking time.

Can I make individual servings?

Yes. You can divide the ingredients among smaller oven-safe dishes, although the baking time will need to be adjusted.

How can I make it extra cheesy?

Use the full 2 cups of cheddar cheese and consider combining cheddar with Monterey Jack or Colby Jack.

Can I add hot sauce?

Yes. Add hot sauce to the egg mixture or serve it on the side.

Chef’s Tips for the Best Results

Cook the sausage completely

Make sure the sausage is browned and no longer pink before adding it to the casserole.

Drain excess grease

Removing excess grease prevents the casserole from becoming unnecessarily oily.

Don’t overbake the eggs

Bake until the eggs are just set. Overbaking can make them dry and firm.

Spread the layers evenly

Distributing the biscuits, sausage, eggs, and cheese evenly helps every serving contain a little of everything.

Let the casserole rest

Those extra 5–10 minutes after baking make the casserole easier to slice and serve.

Customize it

Think of this recipe as a flexible breakfast base. You can change the meat, vegetables, cheese, and seasonings to suit your family’s preferences.

A Little History of Breakfast Casseroles

Breakfast casseroles became popular in American home cooking because they offered a practical way to combine familiar breakfast ingredients into one convenient dish.

Eggs, bread, biscuits, sausage, potatoes, and cheese have long been staples of hearty breakfasts. Bringing them together in a casserole made it easier to feed families and groups, particularly during holidays and weekend gatherings.

This biscuit version has the comforting character of a classic Southern-style breakfast, combining biscuits, sausage, eggs, and cheese in one oven-baked dish.

Over time, families have created their own versions by adding everything from bacon and ham to vegetables, potatoes, and different types of cheese.

Perfect for Holidays and Brunch

This casserole is especially useful when you’re cooking for several people.

Rather than standing over the stove preparing individual breakfasts, you can assemble one baking dish and let the oven do the work.

It’s a wonderful choice for:

Christmas breakfast
Thanksgiving brunch
Easter morning
Weekend brunch
Family reunions
Potlucks
Overnight guests

Prepare it the night before, refrigerate it, and bake it the next morning for a much easier breakfast routine.

Final Thoughts

Easy Breakfast Biscuit Casserole proves that simple ingredients can create an incredibly satisfying meal.

The soft biscuit base provides a buttery foundation, while the seasoned breakfast sausage adds savory richness. The fluffy eggs bring everything together, and the melted cheddar creates the golden, cheesy finish that makes this casserole so comforting.

With 1 can of refrigerated biscuits, 1 pound of breakfast sausage, 8 eggs, ½ cup milk, and 1½ to 2 cups of cheddar cheese, you can create a hearty breakfast that works beautifully for both everyday mornings and special occasions