Transform your busy mornings with our delicious Keto Breakfast Casserole! It's low-carb and gluten-free, making it an ideal choice for those on a keto diet. With its fluffy eggs, gooey cheese, and savory sausage all mixed together in a Tex-Mex style, it's a breakfast delight. And the best part? It's so easy to make! Give it a try, and you might just find your new favorite way to start the day. Enjoy!

Jump to:
- Preparation and cooking overview
- Chef's note
- 🥘 Ingredients for this keto breakfast casserole recipe
- Ingredient substitutions
- Additional ingredients
- Cooking tools required
- Tool substitutes list
- How to make Keto Breakfast Casserole: step-by-step guide
- Cooking methods
- Preparation steps
- Cooking instructions
- What to serve with keto breakfast casserole?
- How to make it healthier?
- Time-saving tips
- What can I prepare ahead of time?
- Storage and reheating instructions
- Recipe wrap-up conclusion
- Frequently asked questions
- 📖 Recipe
Preparation and cooking overview
Preparing this low-carb breakfast casserole is a breeze! Sauté the sausage and veggies over a cast-iron skillet to golden perfection. Then, add the eggs and shredded cheddar cheese to the mix. Put the skillet into the oven and bake. You will enjoy a delicious casserole dish with just 20 minutes of hands-on effort.
Chef's note
If you love Tex-Mex style, serve the casserole with avocado, sour cream, salsa, and hot sauce. Alternatively, you can go Italian and serve it with arugula dressed with lemon and a drizzle of pesto.
🥘 Ingredients for this keto breakfast casserole recipe
Here's a list of ingredients you need to make this keto egg casserole at home:
Ingredient substitutions
If you are in for a change, here are a few keto-friendly swaps you can try:
Additional ingredients
Want to add a flair of delicious twists to your keto breakfast? Here are some keto-friendly optional ingredients!

Cooking tools required
To make this keto breakfast casserole recipe you will need the following tools:
Tool substitutes list
How to make Keto Breakfast Casserole: step-by-step guide
Cooking methods
Preparation steps
- Gather your ingredients and measure them.
- Wash and dry the onions, tomato, and bell pepper. Next, dice them all into even-sized pieces.
Cooking instructions
- Preheat your oven to 350°F (180°C).
- Heat avocado oil in a 10" cast iron skillet over medium heat.
- Once the oil's hot, add the sausage and cook for about 5-7 minutes, crumbling it with the back of your wooden spoon.
- Once crumbled, toss in the diced bell pepper, onion, and tomato. Sprinkle sea salt, garlic powder, and freshly cracked black pepper.
- Give everything a good stir and let the mixture cook for 3-4 minutes.
- As soon as the veggies soften, turn off the heat.
- In a medium bowl, whisk the eggs and the heavy cream. Pour the mixture over the sausage mix and stir in shredded cheddar cheese.
- Next, transfer the skillet to the preheated oven and bake for 45-50 minutes or until a toothpick inserted in the center comes out clean.

Chef's pro tip
To prevent overcooking the eggs, monitor the casserole closely in the oven. If it starts to brown too fast before setting, gently cover it with foil. Keep in mind that the eggs will continue cooking from the residual heat after being taken out of the oven, so consider removing them slightly earlier.
What to serve with keto breakfast casserole?
Here are some delicious, keto-friendly dishes to pair with our low-carb breakfast recipe:
How to make it healthier?
Time-saving tips
What can I prepare ahead of time?
Storage and reheating instructions
Storage instructions
Reheating instructions
Recipe wrap-up conclusion
Our Keto Breakfast Casserole isn't just a morning superstar; the recipe is great for an easy dinner, lunch, and brunch. With just one casserole, you're looking at a whopping 8 servings. Go ahead and double up the magic – you'll have your extended family brunch totally covered with simple ingredients and easy prep!
So next time you want to switch things up from your boring keto diet, try this simple yet tasty casserole. We bet this recipe will be a staple in your routine!
If you like this recipe, here are a few simple keto breakfast recipes for you:
Frequently asked questions
📖 Recipe

Keto Breakfast Casserole
Ingredients
- 3 tablespoons avocado oil
- 12 ounces sugar-free breakfast sausage
- ¾ cup bell pepper diced
- ½ cup onion diced
- 1 tomato diced
- 1 teaspoon sea salt
- ½ teaspoon freshly cracked black pepper
- ½ teaspoon garlic powder
- 10 large eggs
- ½ cup heavy cream
- 1 cup cheddar cheese shredded
Instructions
- Preheat your oven to 350°F (180°C).
- Heat avocado oil in a 10" cast iron skillet over medium heat.
- Once the oil's hot, add the sausage and cook for about 5-7 minutes, crumbling it with the back of your wooden spoon.
- Once crumbled, toss in the diced bell pepper, onion, and tomato. Sprinkle sea salt, garlic powder, and freshly cracked black pepper.
- Give everything a good stir and let the mixture cook for 3-4 minutes.
- As soon as the veggies soften, turn off the heat.
- In a medium bowl, whisk the eggs and the heavy cream. Pour the mixture over the sausage mix and stir in shredded cheddar cheese.
- Next, transfer the skillet to the preheated oven and bake for 45-50 minutes or until a toothpick inserted in the center comes out clean.
Eva says
Awesome flavor and super simple! I feel like we should even throw spinach in here too! We loved this recipe and would totally want to use this as a bake in advance and then freeze and reheat for a quick breakfast on the go!
Gonna give it our best this first time, but some pro insight for storage and shelf life would be appreciated!!