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This Bisquick breakfast casserole is a hearty, family-friendly breakfast packed with savory sausage, crispy hashbrowns, fresh vegetables, and plenty of melty cheese. A simple batter made with Bisquick baking mix, eggs, and milk bakes everything together into a fluffy, flavorful breakfast bake. It’s easy to prepare, perfect for feeding a crowd, and ideal for holidays, brunch gatherings, or meal prepping for busy mornings.
For more crowd-pleasing breakfast casseroles, try my Easy Breakfast Casserole and Sausage Hashbrown Breakfast Casserole.
Why you’ll love this Bisquick breakfast casserole with hashbrowns!
This Bisquick breakfast casserole recipe is one of my all-time favorite quick breakfast ideas. The casserole starts by cooking ground breakfast sausage with bell pepper and onion. Then, we add hash brown potatoes and mix in some cheddar cheese. You always need cheese in a breakfast casserole!
The best part of this recipe is the Bisquick baking mix that I whisk together with milk, eggs, and a bit of maple syrup. We pour the sweet pancake mix over the savory ingredients to give this breakfast dish the perfect blend of flavors.
- Easy to make: Simple ingredients and minimal prep make this recipe quick to put together.
- Perfect for feeding a crowd: The 9×13 pan makes plenty for family breakfasts or brunch gatherings.
- Loaded with flavor: Sausage, hashbrowns, veggies, and cheese create a savory, satisfying bite.
- Great for holidays: Ideal for Christmas morning, Easter brunch, or weekend gatherings.
- Make-ahead friendly: Prepare it in advance and bake when ready.
Table of Contents
Ingredient Notes
To print: see recipe card below
- Ground breakfast sausage – Any type of ground sausage will work for this sausage and cheese casserole. (Also delicious in Sausage Breakfast Casserole!)
- Red bell pepper – Feel free to use red bell pepper, orange bell pepper, or green bell pepper!
- Onion – Provides savory flavor and balances the richness of the casserole.
- Frozen hashbrown potatoes – No need to thaw before mixing.
- Shredded cheddar cheese – For the best results, buy a block of cheese and grate it yourself.
- Bisquick baking mix – Any brand of pancake mix will work. You can even try making your own pancake mix using my homemade pancake mix recipe.
- Eggs – Help bind the casserole together.
- Whole milk – Adds moisture and richness.
- Maple syrup – Use real maple syrup, not imitation syrup.
Variations
- Skip the sausage for a vegetarian breakfast casserole. In this case, I recommend doubling the bell peppers or adding more veggies like sautéd mushrooms or baby spinach.
- Replace the breakfast sausage with oven-cooked bacon. (It’s so good in this Egg Casserole with Biscuits too!)
- Use shredded pepper jack cheese or a Mexican cheese blend in place of the sharp cheddar cheese.
How to Make Bisquick Breakfast Bake
- Cook the sausage: Heat a large skillet over medium-high heat. Add the sausage, pepper, and onion. Cook for about ten minutes, breaking the meat up as it cooks. Continue to cook until the meat is no longer pink and the veggies are soft.
- Finish the filling: Remove the skillet from the heat, and stir in the hash browns and 1 1/2 cups of shredded cheese.
- Transfer to baking dish: Spread the sausage mixture into the casserole dish, spreading it out in an even layer.
- Top and Bake: In a large bowl, whisk the Bisquick mix, eggs, milk, maple syrup, salt, and pepper. Pour the mixture evenly over the casserole filling. Bake for 40 minutes. Sprinkle the remaining 1/2 cup of cheese on top. Return the casserole to the oven, and bake for three to four minutes to melt the cheese.
Serving Suggestions
- This Bisquick breakfast casserole recipe is fantastic on its own. However, it also pairs well with a light, fruity side dish like a tropical smoothie or fruit and grain smoothie bowl.
- Or, serve it with some avocado toast or salmon toast for a more filling side dish.
- You can’t go wrong with a cup of whipped coffee next to your breakfast casserole, either!
How to Store
- Refrigerator: Store leftovers in an airtight container for 3–4 days.
- Freezer: Freeze the casserole for up to 2 months.
- Reheating: Reheat slices in the microwave or warm the casserole in a 350°F oven until heated through.
Frequently Asked Questions
Yes. Assemble the casserole the night before, cover it, and store it in the refrigerator. Bake it the next morning.
No. Frozen hashbrowns can be added directly to the casserole.
Yes. Any baking or pancake mix will work in this recipe.
Absolutely. Simply add more vegetables or substitute bacon or ham.
Other Recipes With Bisquick
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Bisquick Breakfast Casserole
Equipment
- large skillet
- Rubber spatula or wooden spoon
- 9×13 baking dish
- Baking spray
- Measuring cups and spoons
- whisk
- Mixing bowl
Ingredients
- 1 ½ pounds ground breakfast sausage
- 1 red bell pepper, seeds removed, chopped
- 1 onion, chopped
- 3 cups frozen hash brown potatoes
- 2 cups shredded cheddar cheese
- 1 cup Bisquick baking mix
- 4 eggs
- 2 cups whole milk
- 2 Tablespoons maple syrup
- 1 teaspoon salt
- ½ teaspoon ground black pepper
Instructions
- Preheat your oven to 400ºF. Spray a 9×13 baking dish with baking spray and set aside.
- Heat a large skillet over medium-high heat. Add the ground sausage, chopped pepper, and chopped onion to the hot skillet. Cook for about 10 minutes, chopping the meat as it cooks so that it is small crumbles. The meat should no longer be pink, and the peppers and onions should be soft.1 ½ pounds ground breakfast sausage, 1 red bell pepper, seeds removed, chopped, 1 onion, chopped
- Remove the skillet from the heat and stir in the hash brown potatoes and 1 ½ cups of the cheese.2 cups shredded cheddar cheese, 3 cups frozen hash brown potatoes
- Scoop the sausage mix into the prepared baking dish and spread it into an even layer.
- In a seperate mixing bowl, whisk together the Bisquick, eggs, maple syrup, milk, salt, and pepper.1 cup Bisquick baking mix, 4 eggs, 2 cups whole milk, 2 Tablespoons maple syrup, 1 teaspoon salt, ½ teaspoon ground black pepper
- Pour the Bisquick mix into the casseorle dish.
- Bake the casserole, uncovered, for 40 minutes. The casserole should be golden brown, and a knife inserted into the center of the casserole should come out clean.
- Sprinkle the remaining ½ cup of cheese over the hot casserole and return it to the oven to bake for 3-4 more minutes just to melt the cheese.
- Serve while hot!
Video
Notes
- Brown the sausage well for the best flavor.
- Freshly shredded cheese melts more smoothly than pre-shredded cheese.
- Let the casserole rest 5–10 minutes before slicing.
- Add extra vegetables for more texture and flavor.
- Freeze leftovers for easy breakfasts later.
Sweet and savory breakfast casserole with sausage and veggies—perfect for a hearty morning!
Yum, this looks like the perfect cosy breakfast! Saving this for the weekend 😍🍳
So simple yet so good! I make this almost every week 😍
These look amazing 😍 perfect treat for a cozy morning