Sausage & Egg Keto Breakfast Casserole Recipe
If you love waking up to a cozy, deeply satisfying breakfast that just happens to be perfect for a keto lifestyle, this Sausage & Egg Keto Breakfast Casserole is about to become your new go-to. Fluffy eggs, savory sausage, and gooey melted cheeses meld together with bursts of colorful veggies in every slice. It’s not only a crowd-pleaser on busy mornings but also makes your meal prep dreams come true with leftovers that reheat beautifully. Whether you’re feeding a hungry family or setting yourself up for low-carb breakfast success all week long, this casserole truly checks every box.

Ingredients You’ll Need
Every ingredient in this recipe has its own special role, from adding dreamy creaminess to packing in flavor or color. Keeping things simple ensures every bite is both delicious and keto-friendly, with nothing unnecessary in the mix.
- Ground breakfast sausage: The star of the show, providing a hearty, savory bite that anchors the entire casserole.
- Large eggs: Ten eggs create the fluffy, protein-packed base that ties every element together.
- Heavy cream: A splash adds extra richness and ensures your casserole is tender and creamy.
- Shredded cheddar cheese: Cheddar brings a sharp, classic flavor that contrasts beautifully with the sausage.
- Shredded mozzarella cheese: This cheese melts into gooey pockets for added stretch and smoothness.
- Diced bell peppers (any color): Peppers add color, a hint of sweetness, and irresistible texture.
- Diced onion: A touch of onion gives savory depth and a bit of crunch to each slice.
- Salt: Just enough to highlight all the other flavors.
- Black pepper: Adds warmth and a gentle kick without overpowering the casserole.
- Garlic powder: Rounds out the seasoning for a subtle, aromatic finish.
- Chopped parsley (optional): A pretty garnish for fresh color and a mild, herby note.
How to Make Sausage & Egg Keto Breakfast Casserole
Step 1: Preheat and Prepare the Baking Dish
Start by preheating your oven to 375°F. Greasing your 9×13-inch baking dish is important—this step ensures your Sausage & Egg Keto Breakfast Casserole lifts out in perfect slices, with no sticking or mess.
Step 2: Brown the Sausage
Place a skillet over medium heat and cook your ground breakfast sausage. Break it into crumbles with a spatula as it sizzles, making sure every piece is browned evenly for deep, savory flavor. Once fully cooked, drain any excess grease and set the sausage aside.
Step 3: Mix the Egg Base
In a large bowl, whisk the eggs, heavy cream, salt, black pepper, and garlic powder until the mixture looks uniform and a little frothy. This step is where you build the foundation for fluffy and flavorful bites in your casserole.
Step 4: Add Cheeses and Veggies
Gently stir the shredded cheddar, mozzarella, diced bell peppers, and onion into your egg mixture. Delicious pops of color and creamy melted cheese await with every forkful!
Step 5: Combine with Sausage
Now fold in the cooked sausage crumbles. Stir everything together so each ingredient is distributed evenly. This ensures that every slice of Sausage & Egg Keto Breakfast Casserole is packed with sausage, cheese, and veggies.
Step 6: Pour and Bake
Pour your casserole mixture into the greased baking dish and spread it out into an even layer. Slide the dish into the preheated oven and bake for 30 to 35 minutes, or until the casserole is set in the center and gloriously golden on top.
Step 7: Cool and Garnish
Once out of the oven, let the casserole rest for five minutes before slicing. This makes it easier to cut neat portions. If you like, sprinkle with chopped parsley for a fresh, vibrant finish.
How to Serve Sausage & Egg Keto Breakfast Casserole

Garnishes
Brighten up each plate with a scatter of fresh parsley or chives. For a little extra keto flair, try a dollop of sour cream or sliced avocado on top of your Sausage & Egg Keto Breakfast Casserole. These simple touches add a pop of color and extra layers of flavor.
Side Dishes
This hearty casserole truly stands alone, but it also makes a great pairing with a crisp, tangy side salad or roasted asparagus. If you want to make it a weekend feast, serve with sautéed greens or a bowl of mixed berries (keto-friendly, of course).
Creative Ways to Present
If you’re hosting brunch or meal prepping for the week, cut your Sausage & Egg Keto Breakfast Casserole into small squares for bite-sized grab-and-go breakfasts. Or, use cookie cutters for fun shapes if serving kids. Stack slices with a layer of sliced tomato in between for a twist on breakfast lasagna!
Make Ahead and Storage
Storing Leftovers
Enjoy stress-free mornings by storing leftover casserole in airtight containers in the fridge. It keeps well for up to five days—just the right amount of time for meal-prepping your way through a busy week.
Freezing
To freeze, cut the cooled casserole into portions and wrap each in plastic wrap, then place them in a freezer-safe bag or container. They’ll stay fresh and tasty for up to three months, making future breakfasts as easy as can be.
Reheating
Reheat individual pieces of Sausage & Egg Keto Breakfast Casserole in the microwave in 30-second bursts until warmed through, or bake at 350°F for about 10 minutes. Either way, the texture stays lovely and you’ll enjoy all those original flavors.
FAQs
Can I use a different type Breakfast
Absolutely! Feel free to use spicy sausage, turkey sausage, or even chorizo for a different flavor twist. Just make sure to cook and crumble it before mixing into the casserole.
Is it possible to add other veggies or swap the cheese?
Yes, this recipe is super flexible. You can add spinach, mushrooms, or zucchini, and swap cheeses like Monterey Jack or Swiss for a personalized touch. Just watch out for high-moisture veggies, which could make your casserole watery.
Can I make Sausage & Egg Keto Breakfast Casserole the night before?
Definitely! Simply assemble the casserole, cover, and refrigerate overnight. In the morning, bake as directed (adding a few extra minutes if chilled) and you’re ready to serve a hot breakfast with zero morning prep.
How do I know when the casserole is done baking?
The center should be just set and the top golden brown. A knife inserted into the middle should come out clean, without any liquid egg. If in doubt, bake for a few extra minutes and keep checking.
What’s the best way to reheat a big batch for a crowd?
Place slices on a baking sheet, cover with foil, and reheat in a 350°F oven for 10-15 minutes. This keeps the texture perfect and the cheeses deliciously melty, making serving a breeze for brunch guests.
Final Thoughts
There’s something so comforting about sharing a batch of Sausage & Egg Keto Breakfast Casserole, whether with your family on a lazy Sunday or meal prepping for yourself to make every morning special. Give it a try, and you just might find it becomes your favorite way to start the day!
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Sausage & Egg Keto Breakfast Casserole Recipe
- Total Time: 45 minutes
- Yield: 8 servings 1x
- Diet: Non-Vegetarian
Description
This Sausage & Egg Keto Breakfast Casserole is a delicious and satisfying low-carb dish that’s perfect for breakfast or brunch. Packed with flavorful sausage, eggs, cheeses, and veggies, it’s easy to make and great for meal prep.
Ingredients
For the Casserole:
- 1 pound ground breakfast sausage
- 10 large eggs
- 1/2 cup heavy cream
- 1 cup shredded cheddar cheese
- 1/2 cup shredded mozzarella cheese
- 1/2 cup diced bell peppers (any color)
- 1/4 cup diced onion
- 1/2 teaspoon salt
- 1/4 teaspoon black pepper
- 1/4 teaspoon garlic powder
- chopped parsley for garnish (optional)
Instructions
- Preheat the Oven: Preheat the oven to 375°F and grease a 9×13-inch baking dish.
- Cook Sausage: In a skillet over medium heat, cook the sausage until fully browned, breaking it into crumbles. Drain excess grease and set aside.
- Prepare Egg Mixture: In a large bowl, whisk together the eggs, heavy cream, salt, pepper, and garlic powder until well combined. Stir in the cheddar cheese, mozzarella, diced peppers, and onion. Add the cooked sausage and mix everything together.
- Bake: Pour the mixture into the prepared baking dish and spread evenly. Bake for 30–35 minutes or until the center is set and the top is golden.
- Cool and Garnish: Let cool for 5 minutes before slicing. Garnish with chopped parsley if desired.
Notes
- This casserole is perfect for meal prep—store leftovers in the fridge for up to 5 days or freeze individual portions.
- You can customize with spinach, mushrooms, or swap cheeses to your liking.
- Prep Time: 10 minutes
- Cook Time: 35 minutes
- Category: Breakfast
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1/8 of recipe
- Calories: 320
- Sugar: 1g
- Sodium: 530mg
- Fat: 26g
- Saturated Fat: 11g
- Unsaturated Fat: 13g
- Trans Fat: 0g
- Carbohydrates: 3g
- Fiber: 0g
- Protein: 18g
- Cholesterol: 245mg