If you’re following the ketogenic diet, you already know how important a low-carb, high-fat breakfast is for keeping you in ketosis and fueling your day.
Breakfast casseroles are perfect for keto because they’re easy to prepare, feed a crowd (or provide meal prep for the week), and can be packed with keto-friendly ingredients like eggs, cheese, bacon, and low-carb vegetables.
In this comprehensive guide, we’ll explore ten of the best keto breakfast casseroles that you can enjoy while staying on track with your low-carb goals.
Whether you’re looking for a hearty casserole loaded with sausage and cheese or a lighter veggie-packed option, there’s something for everyone here.
Each recipe comes with a full list of ingredients, step-by-step cooking instructions, and the carb count per serving to make meal planning easier.
Why Keto Breakfast Casseroles Are a Great Option
Breakfast casseroles are ideal for those on a keto diet for several reasons:
- Convenience: You can make a large batch, portion it out, and enjoy it throughout the week.
- Versatility: Breakfast casseroles allow you to mix and match ingredients, providing endless flavor combinations.
- Low-Carb Ingredients: Casseroles often feature eggs, meats, and cheeses—foods that are naturally low in carbohydrates and perfect for keto.
- Meal Prep Friendly: These casseroles can be stored in the fridge or freezer, making them a great option for meal prep or when you need a quick, reheatable meal.
Nutritional Benefits of Keto Breakfast Casseroles
Most keto casseroles will contain:
- High protein: From eggs, meats, and cheeses, which support muscle growth and satiety.
- Healthy fats: From butter, cream, and cheese, providing long-lasting energy and helping you maintain ketosis.
- Low carbs: By focusing on low-carb vegetables like spinach, zucchini, or broccoli, these casseroles keep your carb intake minimal, typically under 5-8 grams per serving.
Let’s jump into these delicious recipes that will make your keto mornings something to look forward to!
Recipe 1: Cheesy Sausage and Spinach Keto Casserole
This hearty casserole combines sausage, spinach, and cheese for a savory, satisfying breakfast. Perfect for meal prep, it stays fresh for several days.
Ingredients:
- 1 pound ground breakfast sausage (sugar-free)
- 6 large eggs
- 1 cup shredded cheddar cheese
- 1 cup fresh spinach, chopped
- ½ cup heavy cream
- 1 teaspoon garlic powder
- Salt and pepper to taste
Instructions:
- Preheat your oven to 350°F (175°C) and grease a 9×13 inch baking dish.
- In a skillet, cook the sausage over medium heat until browned. Drain any excess fat.
- In a large bowl, whisk together eggs, heavy cream, garlic powder, salt, and pepper.
- Stir in the cooked sausage, chopped spinach, and half of the shredded cheese.
- Pour the mixture into the prepared baking dish and sprinkle the remaining cheese on top.
- Bake for 25-30 minutes, or until the casserole is set and the cheese is bubbly and golden on top.
- Let cool for 5 minutes before slicing and serving.
Carb Count per Serving: 4g (Serves 8)
Keto Tip: You can add more veggies like mushrooms or bell peppers to increase the volume without adding many carbs.
Recipe 2: Bacon and Egg Keto Casserole
This simple, classic combination of bacon and eggs is perfect for a low-carb, high-fat breakfast that’s filling and easy to make.
Ingredients:
- 12 slices of bacon
- 8 large eggs
- ½ cup heavy cream
- 1 cup shredded mozzarella cheese
- ½ teaspoon paprika
- Salt and pepper to taste
- Fresh parsley for garnish (optional)
Instructions:
- Preheat your oven to 375°F (190°C) and grease an 8×8 inch baking dish.
- Cook the bacon in a skillet until crispy, then crumble into small pieces.
- In a large bowl, whisk together the eggs, heavy cream, paprika, salt, and pepper.
- Stir in the bacon crumbles and shredded mozzarella cheese.
- Pour the mixture into the baking dish and bake for 20-25 minutes, or until the eggs are fully set.
- Garnish with fresh parsley before serving, if desired.
Carb Count per Serving: 2g (Serves 6)
Keto Tip: For a smoky flavor, try using smoked paprika or adding a dash of hot sauce to the egg mixture before baking.
Recipe 3: Broccoli and Cheddar Keto Breakfast Casserole
This veggie-packed casserole brings together broccoli and cheddar for a deliciously cheesy, low-carb breakfast that’s full of nutrients.
Ingredients:
- 4 cups broccoli florets, steamed
- 8 large eggs
- 1 cup shredded sharp cheddar cheese
- ½ cup heavy cream
- 1 teaspoon Dijon mustard
- ½ teaspoon onion powder
- Salt and pepper to taste
Instructions:
- Preheat your oven to 350°F (175°C) and grease a 9×13 inch baking dish.
- Steam the broccoli florets until tender, about 5-7 minutes.
- In a large bowl, whisk together the eggs, heavy cream, Dijon mustard, onion powder, salt, and pepper.
- Stir in the steamed broccoli and half of the shredded cheddar cheese.
- Pour the mixture into the prepared dish and top with the remaining cheese.
- Bake for 30-35 minutes, or until the casserole is set and the top is golden.
- Let cool for 5 minutes before serving.
Carb Count per Serving: 5g (Serves 8)
Keto Tip: You can substitute broccoli with cauliflower to lower the carb count or add cooked sausage for extra protein.
Recipe 4: Keto Ham and Cheese Breakfast Casserole
This ham and cheese casserole is rich, creamy, and loaded with protein, making it a satisfying way to start your day.
Ingredients:
- 2 cups diced ham (sugar-free)
- 8 large eggs
- 1 cup shredded Swiss cheese
- ½ cup heavy cream
- ½ teaspoon garlic powder
- ½ teaspoon mustard powder
- Salt and pepper to taste
Instructions:
- Preheat your oven to 350°F (175°C) and grease an 8×8 inch baking dish.
- In a large bowl, whisk together the eggs, heavy cream, garlic powder, mustard powder, salt, and pepper.
- Stir in the diced ham and shredded Swiss cheese.
- Pour the mixture into the prepared dish and bake for 25-30 minutes, or until the casserole is set and lightly browned on top.
- Let cool for 5 minutes before slicing and serving.
Carb Count per Serving: 3g (Serves 6)
Keto Tip: This casserole freezes well, making it a great option for meal prep. Just reheat individual portions as needed.
Recipe 5: Spinach and Feta Keto Casserole
This casserole is a Mediterranean-inspired dish featuring the flavors of spinach and feta, perfect for a healthy, low-carb breakfast.
Ingredients:
- 5 cups fresh spinach, chopped
- 6 large eggs
- 1 cup crumbled feta cheese
- ½ cup heavy cream
- 1 teaspoon dried oregano
- 1 clove garlic, minced
- Salt and pepper to taste
Instructions:
- Preheat your oven to 350°F (175°C) and grease a 9×9 inch baking dish.
- In a skillet, sauté the chopped spinach and garlic until wilted, then set aside to cool slightly.
- In a large bowl, whisk together the eggs, heavy cream, oregano, salt, and pepper.
- Stir in the sautéed spinach and crumbled feta cheese.
- Pour the mixture into the baking dish and bake for 25-30 minutes, or until the casserole is set and the edges are golden.
- Let cool for 5 minutes before serving.
Carb Count per Serving: 4g (Serves 6)
Keto Tip: Add olives or sun-dried tomatoes to this casserole for extra Mediterranean flavor while keeping it low-carb.
Recipe 6: Keto Zucchini and Cheese Breakfast Casserole
Light yet filling, this zucchini-based casserole is a great way to incorporate more vegetables into your keto breakfast routine.
Ingredients:
- 2 medium zucchinis, grated
- 6 large eggs
- 1 cup shredded mozzarella cheese
- ½ cup Parmesan cheese, grated
- ½ cup heavy cream
- 1 teaspoon dried basil
- Salt and pepper to taste
Instructions:
- Preheat your oven to 350°F (175°C) and grease a 9×9 inch baking dish.
- Grate the zucchinis and squeeze out excess moisture using a clean towel.
- In a large bowl, whisk together the eggs, heavy cream, dried basil, salt, and pepper.
- Stir in the grated zucchini, mozzarella, and Parmesan cheese.
- Pour the mixture into the prepared dish and bake for 30-35 minutes, or until the casserole is set and lightly browned on top.
- Let cool for 5 minutes before serving.
Carb Count per Serving: 4g (Serves 8)
Keto Tip: Zucchini has a lot of moisture, so make sure to squeeze it out thoroughly to prevent the casserole from becoming soggy.
Recipe 7: Sausage, Egg, and Cheese Keto Casserole
This sausage, egg, and cheese casserole is a classic, satisfying breakfast that will keep you full for hours.
Ingredients:
- 1 pound ground breakfast sausage (sugar-free)
- 8 large eggs
- 1 cup shredded cheddar cheese
- ½ cup heavy cream
- 1 teaspoon garlic powder
- 1 teaspoon onion powder
- Salt and pepper to taste
Instructions:
- Preheat your oven to 350°F (175°C) and grease a 9×13 inch baking dish.
- Cook the sausage in a skillet until browned, then drain excess fat.
- In a large bowl, whisk together the eggs, heavy cream, garlic powder, onion powder, salt, and pepper.
- Stir in the cooked sausage and shredded cheddar cheese.
- Pour the mixture into the prepared dish and bake for 30-35 minutes, or until the casserole is set and golden on top.
- Let cool for 5 minutes before serving.
Carb Count per Serving: 4g (Serves 8)
Keto Tip: Add some green onions or bell peppers to this casserole for extra flavor and crunch.
Recipe 8: Keto Cauliflower Breakfast Casserole
Cauliflower makes an excellent low-carb substitute for potatoes in this hearty casserole that’s full of flavor.
Ingredients:
- 4 cups cauliflower florets, steamed
- 6 large eggs
- 1 cup shredded cheddar cheese
- ½ cup heavy cream
- 1 teaspoon garlic powder
- ½ teaspoon paprika
- Salt and pepper to taste
Instructions:
- Preheat your oven to 350°F (175°C) and grease a 9×13 inch baking dish.
- Steam the cauliflower florets until tender, then chop into small pieces.
- In a large bowl, whisk together the eggs, heavy cream, garlic powder, paprika, salt, and pepper.
- Stir in the cauliflower and half of the shredded cheddar cheese.
- Pour the mixture into the prepared dish and top with the remaining cheese.
- Bake for 30-35 minutes, or until the casserole is set and the cheese is golden.
- Let cool for 5 minutes before serving.
Carb Count per Serving: 5g (Serves 8)
Keto Tip: For a more indulgent casserole, add cooked bacon or sausage.
Recipe 9: Keto Mexican Breakfast Casserole
Bring some spice to your keto breakfast with this Mexican-inspired casserole, filled with cheese, eggs, and flavorful spices.
Ingredients:
- 1 pound ground beef or chorizo (sugar-free)
- 8 large eggs
- 1 cup shredded Mexican cheese blend
- ½ cup heavy cream
- 1 teaspoon cumin
- 1 teaspoon chili powder
- 1 jalapeño, diced (optional)
- Salt and pepper to taste
Instructions:
- Preheat your oven to 350°F (175°C) and grease a 9×13 inch baking dish.
- Cook the ground beef or chorizo in a skillet until browned, then drain excess fat.
- In a large bowl, whisk together the eggs, heavy cream, cumin, chili powder, salt, and pepper.
- Stir in the cooked beef or chorizo, shredded cheese, and diced jalapeño (if using).
- Pour the mixture into the prepared dish and bake for 30-35 minutes, or until the casserole is set and the top is golden.
- Let cool for 5 minutes before serving.
Carb Count per Serving: 4g (Serves 8)
Keto Tip: Serve with a side of avocado or sour cream for extra healthy fats.
Recipe 10: Keto Mushroom and Swiss Breakfast Casserole
This mushroom and Swiss cheese casserole is creamy, savory, and perfect for keto breakfast lovers who enjoy earthy flavors.
Ingredients:
- 8 ounces mushrooms, sliced
- 8 large eggs
- 1 cup shredded Swiss cheese
- ½ cup heavy cream
- 1 teaspoon thyme
- 1 clove garlic, minced
- Salt and pepper to taste
Instructions:
- Preheat your oven to 350°F (175°C) and grease a 9×9 inch baking dish.
- Sauté the mushrooms and garlic in a skillet over medium heat until the mushrooms are softened, about 5 minutes.
- In a large bowl, whisk together the eggs, heavy cream, thyme, salt, and pepper.
- Stir in the sautéed mushrooms and shredded Swiss cheese.
- Pour the mixture into the prepared dish and bake for 25-30 minutes, or until the casserole is set and golden on top.
- Let cool for 5 minutes before serving.
Carb Count per Serving: 5g (Serves 6)
Keto Tip: Add some cooked bacon or sausage for an extra protein boost.
Conclusion
These keto breakfast casserole recipes offer a variety of flavors and ingredients to keep your breakfast routine exciting, all while staying low-carb and keto-friendly. From classic sausage and cheese to veggie-packed casseroles, there’s something here for everyone. They’re perfect for meal prep, reheating, or serving to family and friends.
Start your mornings with one of these delicious casseroles and stay fueled throughout the day while sticking to your keto goals. Each recipe is designed to be easy, nutritious, and most importantly, low in carbs. Enjoy the convenience of a breakfast casserole that supports your keto lifestyle!