Savory Keto Breakfast Casserole

Name: Savory Keto Breakfast Casserole
Prep time: 10 min
Cook time: 30 min
Total time: 40 min
Yield: 8 servings
Ingredients: 8 large eggs; 1 cup heavy cream; 2 cups shredded cheese (cheddar or mozzarella); 1 cup cooked sausage, crumbled; 1 cup spinach, chopped; 1 bell pepper, diced; 1/2 onion, diced; Salt and pepper to taste; Optional: herbs like parsley or chives for garnish

Highlighted under: Fresh Healthy Recipes

When I want a hearty breakfast that keeps me satisfied and fits my keto lifestyle, I turn to this Savory Keto Breakfast Casserole. Packed with delicious ingredients like eggs, cheese, and sautéed vegetables, it’s not only easy to whip up but also perfect for meal prepping. I love how the flavors meld together as it bakes, creating a comforting dish that even my non-keto friends enjoy. Plus, it only takes about 10 minutes of prep time, making it ideal for busy mornings or leisurely weekend brunches.

Created by

Lena

Last updated on 2026-01-30T22:10:27.785Z

Creating this casserole was an experiment that turned into a staple in my household. I wanted something that could serve a crowd while adhering to my ketogenic diet, and this dish checks all the boxes. I experimented with different vegetables and meats until I found the perfect blend that complemented the eggs and cheese beautifully. Each bite is bursting with flavor, and I often customize it with whatever I have on hand.

One of the secrets I discovered is to let the casserole sit for a few minutes after baking. This allows it to set properly, making it easy to cut into squares without falling apart. Trust me, if you wait just a little, the texture will be perfect, and you'll impress everyone at breakfast!

Why You'll Love This Recipe
A comforting blend of eggs, cheese, and savory meats
Flexible recipe—add your favorite vegetables or proteins
Perfect for meal prep; great for busy mornings

Understanding the Ingredients

The key to a successful Savory Keto Breakfast Casserole lies in the quality of its ingredients. The selection of cheese can greatly influence the final flavor and texture; while cheddar offers a sharp taste, mozzarella contributes a creamier, milder profile. I recommend mixing the two for a delightful combination that balances richness with subtle flavor.

Using fresh vegetables is essential for maximizing the casserole’s nutritional value. Spinach adds not only color but also crucial vitamins and minerals. Be sure to sauté the onions and bell peppers briefly before adding—they should be just soft enough to enhance their sweetness without losing their structure during baking.

Perfecting the Texture

Achieving the right texture is vital for any breakfast casserole. For this recipe, the heavy cream creates a rich, custard-like base, which results in a soft, moist interior. Whisking the eggs and cream until well combined airates the mixture slightly, allowing it to rise and puff as it bakes. Keep an eye on it—once it’s golden and set in the center, it’s done cooking.

If you prefer a firmer texture, you can reduce the heavy cream to 3/4 cup, or substitute half of it with almond milk. This will still yield a satisfying result but with fewer calories. Keep in mind that reducing fat could lead to a drier casserole, so remember to check for doneness more frequently.

Ingredients

Gather your ingredients to get started on this delectable breakfast casserole.

Ingredients for Savory Keto Breakfast Casserole

8 large eggs
1 cup heavy cream
2 cups shredded cheese (cheddar or mozzarella)
1 cup cooked sausage, crumbled
1 cup spinach, chopped
1 bell pepper, diced
1/2 onion, diced
Salt and pepper to taste
Optional: herbs like parsley or chives for garnish

Have your ingredients ready? Let’s move on to the cooking steps!

Instructions

Follow these simple steps to create your Savory Keto Breakfast Casserole.

Preheat and Prepare

Preheat your oven to 350°F (175°C). Grease a 9x13-inch baking dish with cooking spray.

Mix the Egg Base

In a large bowl, whisk together the eggs, heavy cream, salt, and pepper until well combined.

Add Vegetables and Sausage

Stir in the crumbled sausage, chopped spinach, diced bell pepper, and onion. Mix in 1 cup of the shredded cheese.

Pour and Bake

Pour the mixture into the prepared baking dish and top with the remaining cheese. Bake for 30 minutes, or until set and golden on top.

Cool and Serve

Remove from the oven and let it cool for about 5 minutes before cutting into squares. Enjoy warm!

Now that your casserole is ready, enjoy it fresh or store leftovers for a quick meal!

Pro Tips

Feel free to add any keto-friendly vegetables you have on hand, such as zucchini or mushrooms, to enhance the flavor and nutrition.

Serving Suggestions

This casserole is incredibly versatile and can be served on its own or accompanied by a fresh green salad for added crunch. For those who enjoy a kick, consider serving it with a side of homemade salsa or avocado slices for an extra burst of flavor. If you’re hosting a brunch, I often slice it into small squares and serve them on toothpicks for an easy grab-and-go option.

To elevate your serving experience, sprinkle fresh herbs like parsley or chives on top just before serving. Not only do these add a pop of color, but they also enhance the dish’s overall flavor profile. If you happen to have some bacon bits or diced jalapeños on hand, these can also make great toppings!

Make-Ahead and Storage Tips

One of the best features of this Savory Keto Breakfast Casserole is its make-ahead capability. You can assemble everything the night before—just cover the baking dish with foil and refrigerate. In the morning, all you need to do is pop it in the oven. This is particularly helpful for busy weekdays or when hosting guests; it allows you to enjoy more time with loved ones.

If you have leftovers, the casserole can be stored in an airtight container in the refrigerator for up to four days. To reheat, slice and microwave individual portions for about 60-90 seconds, or until warmed through. You can also freeze it for longer storage—wrap slices tightly in plastic wrap, and then place them in a freezer bag. Thaw overnight in the refrigerator before reheating for best results.

Questions About Recipes

→ Can I make this casserole ahead of time?

Yes! You can prepare the casserole the night before, store it in the refrigerator, and bake it in the morning.

→ What cheeses work best for this recipe?

Cheddar and mozzarella are great options, but feel free to experiment with your favorite shredded cheeses.

→ Can I make this vegetarian?

Absolutely! Simply omit the sausage and add more vegetables or your favorite plant-based protein.

→ How do I store leftovers?

Store any leftovers in an airtight container in the fridge for up to 4 days. Reheat in the microwave or oven before serving.