This easy Bisquick breakfast casserole recipe is filled with eggs, sausage, and cheese. Perfect to feed a crowd for breakfast or brunch, you can even serve for a busy weeknight meal.

Bisquick is a baking mix that helps make recipes super simple to make. There are so many amazing Bisquick recipes like Bisquick dumplings, Bisquick chicken tenders, and many more.

What makes this recipe work

• Super simple recipe that can be served anytime of day.
• Versatile and easy to adjust ingredients to taste.
• Great for a crowd. This recipe will feed 8-10 and the recipe can be doubled to feed an even larger group.

Ingredients needed

Bisquick – You can typically find a box of Originial Bisquick mix in the baking aisle of the grocery store.

Sausage – Breakfast sausage is used for this recipe. We are using a pound of original Jimmy Dean sausage but sage, spicy sausage, or even the maple flavored would also be delicious.

Eggs – 4 large eggs.

Milk – You can use 2% or whole milk for this recipe. Whole milk will give it a richer flavor.

Bell Peppers – This ingredient is optional but it adds nice color and flavor. We are using red bell pepper but feel free to use your favorite color.

Onion – White or sweet Vadalia onion.

Hash Browns – Frozen shredded hash browns are needed. They don’t need to be thawed.

Shredded Cheese – I am using a mild cheddar cheese. Sharp cheddar, cheddar blend, or even Colby Jack will work great.

Seasonings – Salt and ground black pepper

How to make Bisquick Breakfast Casserole

Step one: Preheat oven to 375 degrees F. Start by cooking the breakfast sausage in a large skillet. You will want to crumble it up and cook until browned. Discard the excess grease and then add pepper and onion. Cook another 2-3 minutes to soften.

Step two: Spray a 9 x 13 casserole dish with nonstick cooking spray. Add cooked sausage mixture, hash browns, and half of the cheese into the prepared baking dish. Stir the ingredients.

Step three: In a large bowl, whisk together eggs, milk, Bisquick, salt and pepper. Pour the egg mixture over the sausage mixture. Bake for 40-45 minutes or until the top starts to turn golden brown.

Step four: Top the casserole with remaining cheese. Bake for another 2-3 minutes or until cheese melts. Make sure to let it sit for about 5 minutes before slicing into pieces.

Casserole tips

• If the casserole starts to get brown and it’s not finished baking, lightly cover the dish with aluminum foil.
• If you are planning on freezing this dish, use an aluminum pan. These are perfect for freezing and reheating.

Recipe variations

This recipe is easy to customize. Here are a few suggestions:

Protein: Add or replace the sausage with cooked, chopped bacon. Diced ham is also delicious in the casserole.

Vegetables: Love veggies? Try adding in sliced mushrooms,

Heat: Like a little spice? Try adding a few dashes of hot sauce to the egg mixture. You can also stir in a can of diced green chilis.

Sweet: Have a sweet tooth? Mix in 2-3 tablespoon of maple syrup to the egg mixture. This will give you a sweet and savory casserole.

How to store leftovers

Store: Any leftovers can be stored in the baking dish covered with foil. Make sure to let the dish completely cool before storing in the refrigerator. It can also be stored in an airtight container. It will last 3-4 days.

Reheat: Reheat an individual piece on a microwave safe place for 45 seconds. You can also reheat the whole baking dish in the oven at 350 degrees.

Freeze: You can easily freeze this egg casserole. Make sure to let it completely cool. Slice into individual pieces and place in freezer safe bags or containers. It will last up to 3 months.

Can this breakfast casserole be made ahead of time?

Yes, this savory breakfast casserole can be made the night before and baked the next day. You can either assemble everything, don’t bake, cover and then bake the next day.

You could also bake the night before, cover and the reheat the next day.

What to serve with breakfast casserole

If you would like to serve this Bisquick sausage breakfast casserole with some breakfast sides here are a few great options:

• Fruit salad
• Green salad
• Cinnamon toast
• Blushing Mimosa
• Slice of banana bread
• Yogurt parfait

More casserole recipes

• Keto Breakfast Casserole
• Eggs Benedict Casserole
• Farmers Casserole
• 20 Best Sausage Casserole