Easy Sausage Breakfast Casserole Recipe

Thaw the biscuits. Take biscuits out of the freezer and let them thaw on a parchment paper lined cutting board. They should be thawed in about 30 minutes.

Prepare. Preheat your oven to 375°F and grease a 9×13 baking dish. 

Sauté the onions. Preheat a pan and add oil. Add the diced onions and sauté until transparent.

Cook the sausage. Add breakfast sausage, break it apart, and cook until it’s cooked through. Break apart clumps as sausage cooks (1).

Create the first layer. Cut each biscuit into fourths and lay the biscuit quarters in the bottom of the prepared baking dish, in one even layer (2).

Add the sausage. Spread cooked sausage and onion mixture over the biscuits (3).

Make the creamy egg mixture. In a mixing bowl, whisk eggs, milk, heavy whipping cream, salt, and pepper together until smooth. Evenly pour the egg mixture all over the biscuits and sausage (4). 

Ingredient Tips and Substitutions

Biscuits – Frozen southern style biscuits are the best to use just make sure to pull them out and spread them on the parchment paper to thaw while cooking the sausage.

Breakfast Sausage – You can use pork or turkey sausage, both work well! Just make sure you don’t use brats, Italian sausage, or anything else – just breakfast sausage. It’s sometimes labeled country sausage.

Dairy – You’ll need both whole milk and heavy cream for this wonderfully thick and rich breakfast casserole!

PRO TIP: Make sure to thaw the frozen biscuits before making the casserole. You will need to start preparing ahead of time. 30-45 minutes is usually enough time to thaw the biscuits on the counter.

How To Make It Ahead Of Time?

Prepare the casserole up to the baking step. Cover it up with plastic wrap or foil and carefully place it in the refrigerator.

You can prepare it the night before and bake it in the morning. Bake time shouldn’t be affected much, may be only by a couple of minutes.

When ready, take the casserole out of the fridge and take off the wrap or foil. Let it warm up on the counter for about 30 minutes, then preheat the oven. Bake until it’s raised, golden brown on top and thermometer inserted in the center reads 165°F.

Can I Add Cheese To Sausage Breakfast Casserole?

If you want to add some cheese, go for it!

I recommend using shredded sharp cheddar cheese for this recipe. It will add extra flavors and go well with breakfast sausage.

Spread about 1 1/2 cups of shredded cheddar over the biscuits after adding sausage. I also like to use a spoon and kind of nestle some cheese in between the biscuits, to make the cheese better incorporated.

You can also add another 1/2 cup over the top of the casserole about 10 minutes before it’s done baking.

Frequently Asked Questions

How long does it take to bake a sausage breakfast casserole?

At 375°F, it would take about 30-35 minutes to bake, but you can always double check for doneness with a thermometer. Use an instant digital read thermometer to check the temperature of the casserole at the very center. It should be baked to 165°F.

How to store it?

You can store this breakfast casserole in the same baking dish, but make sure that it is fully cooled to room temperature. Make sure to cover the baking pan tightly with plastic wrap, wax wrap, or any other air-tight lid or wrap. Store in the refrigerator for up to 5 days.

More Savory Breakfast Recipes

• Shakshuka
• Biscuits and Gravy
• Buttermilk Biscuits
• Garlic Butter Parmesan Herb Biscuits
• Huevos Rancheros
• Frittata

All images and text ©Lyubov Brooke for ©Will Cook For Smiles. Please do not use my images without prior permission. If using my posts in collections and features, please link back to this post for the recipe.
Disclaimer: Nutrition information shown is not guaranteed to be 100% accurate as most ingredients and brands have variations.