This Cheesy Sausage Breakfast Casserole is warm and comforting, packed with savory sausage, eggs, and lots of gooey cheese. It’s perfect for a cozy morning or a fun brunch with friends!
What’s not to love? You can toss it all in one dish, bake, and in no time, breakfast is served! I like to pair it with fresh fruit for a sweet touch. Enjoy every bite! 🍳
Key Ingredients & Substitutions
Breakfast Sausage: Any bulk breakfast sausage will do, but you can switch it up with turkey sausage for a lighter option. If you’re vegetarian, try crumbled tempeh or a plant-based sausage.
Eggs: I stick with large eggs, but you can use egg substitutes if you’re watching cholesterol. For a fluffier casserole, add an extra egg or two for good measure!
Milk: While whole milk adds creaminess, you can use low-fat milk, almond milk, or even oat milk for a dairy-free version. Just watch the flavor slightly change.
Cheddar Cheese: Sharp cheddar gives great flavor, but feel free to mix it with Monterey Jack or Colby for variety. For a gooier texture, try adding mozzarella instead!
Bell Pepper and Onion: Use green pepper if you prefer its sharper taste. You can also swap in other veggies, like spinach or mushrooms, to add more nutrients!
How Can I Ensure My Casserole Is Fluffy and Not Overcooked?
Cook your casserole perfectly by keeping an eye on the baking time and temperature.
- Follow the recipe and always preheat the oven to 350°F (175°C).
- Check it around the 30-minute mark. If the top is brown but the center seems wobbly, it’s not done yet.
- Always let it rest for about 5 minutes after baking. This helps the casserole set up nicely!
How to Make Cheesy Sausage Breakfast Casserole
Ingredients You’ll Need:
For the Casserole:
- 1 lb (450g) breakfast sausage, casings removed
- 8 large eggs
- 1 cup whole milk
- 1 cup shredded cheddar cheese, divided
- 1 red bell pepper, diced
- 1/2 cup onion, finely chopped
- 2 cloves garlic, minced
- 1/4 cup fresh parsley, chopped (plus more for garnish)
- 1/2 teaspoon salt
- 1/4 teaspoon black pepper
- 1/4 teaspoon smoked paprika (optional)
- 2 tablespoons olive oil or butter for cooking
How Much Time Will You Need?
This delicious casserole takes about 15 minutes to prepare and 35-40 minutes to bake. After that, it’s best to let it rest for about 5 minutes before serving. In total, you’ll need around an hour to enjoy this fabulous breakfast dish!
Step-by-Step Instructions:
1. Preheat the Oven:
Start by preheating your oven to 350°F (175°C). This ensures that it’s hot enough for baking the casserole. Also, grease a 9×9-inch baking dish with butter or nonstick spray so the casserole doesn’t stick later on.
2. Cook the Sausage:
In a large skillet over medium heat, add olive oil or butter. Then, add the breakfast sausage. Cook it until browned, breaking it into small pieces as it cooks. Once it’s nicely browned, remove it from the skillet and set it aside.
3. Sauté the Vegetables:
Using the same skillet, add the diced onion, red bell pepper, and minced garlic. Sauté these until they are soft and fragrant, which takes about 4-5 minutes. Once they’re done, remove the skillet from the heat.
4. Whisk the Egg Mixture:
In a large mixing bowl, whisk together the eggs, milk, salt, pepper, and smoked paprika (if you’re using it). Mix until everything is well combined.
5. Combine All Ingredients:
Now, stir in half of the shredded cheddar cheese, the cooked sausage, the sautéed vegetables, and the chopped parsley into your egg mixture. Stir until everything is mixed well.
6. Pour into the Baking Dish:
Pour this mixture evenly into the prepared baking dish. Make sure it’s spread out evenly to ensure even cooking.
7. Add More Cheese:
Sprinkle the remaining shredded cheddar cheese evenly on top of the casserole. This will make it extra cheesy and delicious!
8. Bake:
Place the baking dish in the preheated oven and bake uncovered for 35-40 minutes. Keep an eye on it—it’s done when the center is set (not jiggly) and the top is golden and bubbly.
9. Let It Rest:
Once it’s finished baking, remove the casserole from the oven and let it sit for about 5 minutes. This helps it set up nicely and makes serving easier.
10. Serve and Enjoy:
Finally, cut the casserole into squares and garnish with some freshly chopped parsley. Serve warm and enjoy this hearty, cheesy delight for breakfast or brunch!
Can I Use Different Types of Sausage?
Absolutely! You can substitute breakfast sausage with turkey sausage for a leaner option. If you’re looking for a vegetarian or vegan version, try using crumbled tempeh or plant-based sausage alternatives.
Can I Prep This Dish the Night Before?
Yes, you can prepare the casserole the night before! Simply follow the instructions up to the baking step, cover it tightly with plastic wrap, and refrigerate. In the morning, let it sit at room temperature for about 30 minutes before baking, and then proceed with the baking instructions.
Can I Freeze Leftovers?
Yes, you can freeze leftovers! Just let the casserole cool completely, then cut it into individual portions and wrap them tightly in plastic wrap or foil before placing them in an airtight container or freezer bag. It can be frozen for up to 3 months. To reheat, thaw it overnight in the fridge and warm it in the oven or microwave until heated through.
What Can I Serve Alongside This Casserole?
This casserole pairs nicely with fresh fruit, a simple green salad, or even some crispy bacon if you’re feeling indulgent. For a festive twist, consider serving it with a side of salsa or avocado slices!