This hearty 4 Ingredient Sausage Breakfast Casserole is a perfect start to your day! With eggs, sausage, cheese, and bread, it’s simple and super tasty.
Not to brag, but this recipe is so easy, even I can make it! It’s a great way to feed the family on busy mornings without any fuss. Enjoy a slice or two—you deserve it! 😊
Key Ingredients & Substitutions
Breakfast Sausage: You can choose mild or spicy sausage based on your preference. If you have turkey sausage or even plant-based sausage, those work too for a lighter option!
Eggs: The recipe calls for large eggs, but if you’re short on eggs, you can substitute with egg whites or a plant-based egg substitute; just adjust for the amount of binding you need.
Cheddar Cheese: I love using sharp cheddar for added flavor, but you can easily switch to mozzarella, Monterey Jack, or any cheese you enjoy. Try a mix for extra fun!
Biscuit Mix: If you don’t have biscuit mix, you can create a DIY version with flour, baking powder, and salt. Just combine 1 cup of flour with 1½ tsp baking powder and a pinch of salt. Easy peasy!
How Do You Brown the Sausage Just Right?
Browning the sausage adds tons of flavor, so it’s important to do this well! Follow these steps for perfect sausage:
- Heat your skillet on medium, adding the sausage once it’s hot.
- Break the sausage into small pieces with a spatula, spreading it out evenly.
- Cook until browned all over, stirring occasionally. This usually takes about 5-7 minutes.
Don’t rush the process; letting it fully brown gives a richer taste to your casserole. Plus, it smells amazing while cooking!

4 Ingredient Sausage Breakfast Casserole
Ingredients You’ll Need:
- 1 pound breakfast sausage (mild or spicy, your choice)
- 6 large eggs
- 2 cups shredded cheddar cheese
- 1 cup biscuit mix (such as Bisquick)
How Much Time Will You Need?
This delightful casserole takes about 10-15 minutes to prepare and around 30-35 minutes to bake. So, in total, you’re looking at about 45-50 minutes from start to serving! Perfect for your weekend brunch!
Step-by-Step Instructions:
1. Preheat and Prepare
Start by preheating your oven to 350°F (175°C). Grab a 9×9-inch baking dish and grease it lightly with some cooking spray or butter to prevent sticking. This will ensure that your casserole comes out smoothly after baking.
2. Cook the Sausage
In a large skillet over medium heat, add the breakfast sausage. Cook it until it’s nicely browned and fully cooked through, breaking it into small pieces with a spatula or wooden spoon. This usually takes about 5-7 minutes. If there’s excess fat, carefully drain it to keep your casserole from being too greasy!
3. Mix the Egg Mixture
In a medium bowl, crack the eggs and whisk them until they’re fully beaten. Add the biscuit mix into the bowl and mix well until everything is blended together. This is where the magic happens!
4. Combine Ingredients
Now it’s time to bring it all together! Stir the cooked sausage into the egg and biscuit mixture. Then, fold in 1½ cups of the shredded cheddar cheese. This cheesy goodness will make your casserole extra delicious!
5. Bake Your Casserole
Pour the entire mixture into the greased baking dish, making sure it’s evenly distributed. Top it off with the remaining ½ cup of cheddar cheese for that perfect cheesy layer on top. Pop it into the oven!
6. Bake and Cool
Bake the casserole for 30-35 minutes, or until it’s set and the top is a beautiful golden brown. Once done, remove it from the oven and let it cool for a few minutes. This allows it to set a little more, making slicing easier!
7. Serve and Enjoy!
Slice it up, serve it warm, and enjoy this delightful breakfast treat with family and friends. It’s sure to be a hit!
Can I Use Frozen Sausage in This Recipe?
Yes, you can use frozen sausage, but make sure to thaw it first! The best way to thaw is in the refrigerator overnight or by placing it in a sealed bag and submerging it in cold water for a quicker thawing method. Once thawed, crumble and cook as directed.
Can I Make This Casserole Ahead of Time?
Absolutely! You can prepare the casserole the night before by combining all the ingredients and storing it in the fridge. In the morning, just pop it in the oven for a warm, ready-to-eat breakfast!
How Do I Store Leftovers?
Store any leftover casserole in an airtight container in the refrigerator for up to 3 days. You can reheat individual portions in the microwave or warm it up in the oven at 350°F (175°C) until heated through.
Can I Add Vegetables to the Casserole?
Definitely! Feel free to add diced vegetables, like bell peppers, spinach, or onions, to customize your casserole. Just sauté them with the sausage until softened before mixing them into the egg mixture.



