This Bisquick Breakfast Casserole is a hearty and easy dish packed with eggs, cheese, and your favorite breakfast meats. It’s perfect for feeding a crowd or just enjoying for a cozy morning at home!
You know what makes this casserole a winner? You can throw in whatever leftovers you have. So, if you’ve got random veggies or cheese hanging around, toss them in! Less waste, more yum! 😄
I love making this casserole because it’s so simple. Just mix everything and bake! It’s great for brunch or meal prep for busy mornings. Plus, who doesn’t love breakfast for dinner?
Key Ingredients & Substitutions
Bisquick Pancake and Baking Mix: This is the star of the show! If you’re out, you can make your own mix using flour, baking powder, salt, and a bit of butter. Just keep in mind that the texture might change a little.
Cheddar Cheese: I love sharp cheddar for its bold flavor, but you can use any cheese you like! Mozzarella, pepper jack, or even a creamier cheese like Gouda could work wonders.
Breakfast Sausage: Ground sausage adds great flavor. If you’re looking for a healthier option, turkey sausage or even veggie sausage works too. Cooked bacon or ham can be tasty alternatives as well!
Eggs: Fresh large eggs help bind the ingredients. If you need a vegan option, consider using a flax egg substitute (1 tablespoon flaxseed meal + 2.5 tablespoons water = 1 egg) for a different end texture.
How Do I Ensure My Casserole Is Fluffy and Cooked Through?
The key to a fluffy casserole is not overmixing the batter. Once you add the Bisquick, mix just until combined to keep it airy. Here’s how to manage it:
- Preheat your oven to make sure it’s hot and ready.
- Cook the sausage fully to avoid extra grease in your dish.
- Whisk the eggs and milk thoroughly before adding to the Bisquick. This adds air to the mix.
- Don’t rush! Bake until the center looks set and the edges are slightly golden.
- Let it cool slightly before cutting, as it will continue to set as it cools.
Trust me, with these tips, you’ll have a lovely, fluffy breakfast casserole that everyone will enjoy!

How to Make Bisquick Breakfast Casserole
Ingredients You’ll Need:
Main Ingredients:
- 2 cups Bisquick pancake and baking mix
- 1 cup shredded cheddar cheese
- 1/2 pound breakfast sausage (ground)
- 8 large eggs
- 2 cups milk
- 1/4 teaspoon salt
- 1/4 teaspoon pepper
Optional Garnish:
- Fresh herbs such as thyme or parsley
How Much Time Will You Need?
This delightful casserole takes about 15 minutes to prepare and will need around 45 to 50 minutes to bake. In total, you’re looking at about 1 hour of your time to create a delicious and filling breakfast dish!
Step-by-Step Instructions:
1. Preheat the Oven:
Start by preheating your oven to 350°F (175°C). While the oven heats, lightly grease a 9×13 inch baking dish to prevent sticking.
2. Cook the Sausage:
In a skillet over medium heat, cook the breakfast sausage until it is fully browned and cooked through. Break it apart into crumbles as it cooks. Once done, drain any excess fat and set it aside to cool for a moment.
3. Mix the Egg Mixture:
In a large mixing bowl, whisk together the eggs, milk, salt, and pepper until well combined. This ensures your casserole will be tasty and fluffy!
4. Combine with Bisquick:
Now, stir in the Bisquick mix until just combined—be careful not to overmix, as this can make the casserole dense.
5. Add Sausage and Cheese:
Gently fold in the cooked sausage and shredded cheddar cheese into the batter. This is the fun part where you see all those delicious ingredients coming together!
6. Pour into Baking Dish:
Pour the mixture into your prepared baking dish, spreading it evenly so that it bakes nicely.
7. Bake the Casserole:
Bake the dish uncovered for about 45 to 50 minutes, until the casserole is set in the middle and the top is golden brown. This is when your kitchen will start to smell amazing!
8. Cool and Serve:
Once baked, remove it from the oven and let it cool for a few minutes. This makes it easier to cut into squares. Serve warm, and if you’d like, garnish with fresh herbs like thyme for a beautiful touch.
9. Enjoy!
Delicious and fluffy, this Bisquick Breakfast Casserole is perfect on its own or served alongside fresh fruit or toast. Enjoy your breakfast treat!
This casserole is ideal for brunch gatherings, weekends with family, or meal prep for busy mornings. It combines savory, cheesy flavors with a fluffy texture that everyone will love!
Can I Substitute the Sausage?
Absolutely! If you prefer a different meat or need a healthier option, you can use turkey sausage, diced ham, or even crumbled bacon. For a vegetarian version, try adding sautéed vegetables or a meat substitute.
How Can I Make This Casserole Ahead of Time?
You can prepare the casserole the night before! Simply follow the instructions up to pouring the mixture into the baking dish. Cover it tightly with plastic wrap and refrigerate. Bake it in the morning, adding a few extra minutes to the baking time if it’s cold from the fridge.
Can I Freeze Leftovers?
Yes, you can freeze leftover Bisquick Breakfast Casserole! Allow it to cool completely, then cut into squares and store in an airtight container. It will keep well in the freezer for up to 2 months. To reheat, thaw in the fridge overnight and warm in the microwave or oven.
What Are Some Tasty Add-Ins?
Feel free to customize your casserole! You can add chopped bell peppers, onions, or even diced tomatoes for extra flavor. Spinach or kale can be great for added nutrition. Just make sure to sauté any fresh vegetables first to prevent excess moisture.



