This Bisquick Breakfast Casserole is a morning winner! With fluffy eggs, crispy bacon, and cheesy goodness all baked together, it’s both tasty and filling.
Making this casserole is super easy! Just mix everything in a dish and let the oven do the work. Perfect for lazy weekends when you want a big breakfast without a fuss!
Key Ingredients & Substitutions
Bisquick Mix: This is the star of the show, giving the casserole its fluffy texture. If you don’t have Bisquick, you can substitute it with a homemade mix of flour, baking powder, and salt in the right proportions.
Breakfast Sausage: I like using pork sausage for its rich flavor. However, turkey sausage is a great healthier alternative, providing the same taste with less fat. You could also use cooked bacon or even skip meat for a vegetarian version!
Cheddar Cheese: Sharp cheddar adds a lovely flavor. If you’re not a fan, feel free to use mozzarella for a milder taste or a pepper jack for a spicy kick. Vegan cheese options also work well if you’re dairy-free.
Veggies: Onions and bell peppers are optional but add great flavor. Feel free to mix in other veggies like spinach or mushrooms based on your preference or what you have on hand!
What’s the Best Way to Cook Breakfast Sausage?
Cooking breakfast sausage perfectly is key to flavor. It’s simple; just follow these steps:
- Heat a skillet over medium heat. You don’t want it too hot to prevent burning.
- Once hot, add your sausage. Break it up with a spatula into small pieces for even cooking.
- Cook until browned and thoroughly cooked through, about 5-7 minutes. A digital thermometer can help you ensure it reaches 160°F (71°C).
- Drain excess grease using a paper towel; this keeps your casserole from being too greasy.
Don’t rush this step; getting the sausage right will boost your casserole’s flavor significantly!

Bisquick Breakfast Casserole Recipe
Ingredients You’ll Need:
- 2 cups Bisquick mix
- 1 cup milk
- 4 large eggs
- 1/2 pound breakfast sausage (pork or turkey), cooked and crumbled
- 1 cup shredded sharp cheddar cheese
- 1/2 cup diced onions (optional)
- 1/2 cup diced bell peppers (optional)
- Salt and pepper to taste
- Cooking spray or butter for greasing the baking dish
How Much Time Will You Need?
This delicious casserole takes about 10 minutes to prepare and 40-45 minutes to cook, making it a quick and easy option for breakfast! Your total time is around 50-55 minutes from start to enjoying your meal.
Step-by-Step Instructions:
1. Preheat and Prepare the Baking Dish:
Start by preheating your oven to 350°F (175°C). While it’s heating up, grease a 9×9-inch baking dish with cooking spray or a little butter to prevent sticking. This will ensure your casserole comes out easily once it’s baked.
2. Cook the Breakfast Sausage:
In a large skillet, cook the breakfast sausage over medium heat until it’s browned and cooked through, which usually takes about 5-7 minutes. Be sure to break it into smaller pieces as it cooks for even browning. Once it’s done, drain any excess grease and set it aside to cool a bit.
3. Mix the Batter:
In a large mixing bowl, whisk together the Bisquick mix, milk, and eggs. Ensure everything is well combined and smooth. This mix will give your casserole a lovely texture!
4. Add Flavorful Ingredients:
Next, stir in the cooked sausage along with the shredded cheddar cheese, diced onions, and bell peppers if you’re using them. Season the mixture with a little salt and pepper to taste. This is where all the flavor comes together!
5. Pour into the Baking Dish:
Pour the mixture evenly into your prepared baking dish, spreading it out to make sure it’s nice and even.
6. Bake the Casserole:
Place the dish in your preheated oven and bake for 40-45 minutes. You’ll know it’s done when the casserole is set in the middle and the top is slightly golden brown. It should look irresistible!
7. Cool and Serve:
Once baked, remove it from the oven and let it cool for a few minutes. This makes it easier to cut. Slice it into squares, and if you’d like, garnish with fresh herbs like parsley or thyme for a lovely touch.
8. Enjoy!
Serve your Bisquick Breakfast Casserole warm alongside some fresh fruit or vegetables for a complete meal. Enjoy this comforting breakfast with family and friends!
Happy cooking!
Can I Use Egg Substitutes in This Recipe?
Absolutely! You can replace each egg with 1/4 cup of applesauce or a flaxseed meal mix (1 tablespoon ground flaxseed + 3 tablespoons water, let it sit for a few minutes to thicken). This works great for making the casserole egg-free while still keeping a nice texture.
How Can I Make This Casserole Low-Carb?
To make a low-carb version, substitute the Bisquick mix with an almond flour or coconut flour blend. Be aware that you may need to adjust the liquid ingredient amounts slightly since these flours absorb moisture differently than regular flour.
Can I Store Leftovers?
Yes, you can store any leftovers in an airtight container in the refrigerator for up to 3 days. To reheat, simply warm it in the microwave or oven until heated through. You might want to cover it with foil in the oven to prevent it from drying out.
What Other Add-ins Can I Use?
Feel free to get creative! You can add cooked vegetables like spinach, mushrooms, or zucchini, or try incorporating different cheeses like feta or mozzarella. Diced cooked ham or cooked bacon can also add extra flavor!



