Easy Keto Breakfast Casserole Recipe

If you’re following a low-carb lifestyle but still crave a filling and comforting breakfast, this keto breakfast casserole is the perfect solution. Packed with eggs, cheese, sausage, and vegetables, it’s high in protein and fat but low in carbs, keeping you satisfied and energized. This one-dish recipe is simple to prepare, family-friendly, and ideal for meal prep.

What is a Keto Breakfast Casserole?

A keto breakfast casserole is a baked dish that eliminates carb-heavy ingredients like potatoes, bread, or biscuits. Instead, it relies on a combination of eggs, cheese, meats, and low-carb vegetables. It’s designed to fit into a ketogenic diet, keeping carbs low while providing plenty of flavor and nutrition.

Other Easy Breakfast Recipes

• Crockpot Breakfast Casserole
• Breakfast Casserole with Crescent Rolls
• Healthy Breakfast Casserole
• Make-Ahead Breakfast Casserole
• Croissant Breakfast Casserole

Reasons to Try Keto Breakfast Casserole

• Low in carbs – Keeps you on track with your keto goals.
• High in protein and fat – Keeps you full for longer periods.
• Easy meal prep – Bake once, enjoy all week.
• Customizable – Works with different proteins and vegetables.
• Crowd-pleaser – A dish everyone, keto or not, will enjoy.

Ingredients Needed to Make Keto Breakfast Casserole

• 1 lb breakfast sausage (pork, turkey, or chicken, cooked and crumbled)
• 8 large eggs
• 1 cup heavy cream (or unsweetened almond milk for lighter option)
• 1 cup shredded cheddar cheese (or mozzarella)
• 1 small onion, finely chopped
• 1 cup fresh spinach, chopped
• ½ cup mushrooms, sliced
• 1 red bell pepper, diced
• 1 teaspoon garlic powder
• 1 teaspoon salt
• ½ teaspoon black pepper
• 2 tablespoons chopped fresh parsley (optional for garnish)

Instructions to Prepare Keto Breakfast Casserole

Step 1: Preheat oven

Set your oven to 350°F (175°C) and grease a 9×13-inch baking dish.

Step 2: Cook sausage

Brown sausage in a skillet over medium heat until fully cooked. Drain excess grease.

Step 3: Prepare vegetables

Sauté onion, bell pepper, and mushrooms until softened. Stir in spinach and cook just until wilted.

Step 4: Layer ingredients

Spread sausage and vegetables evenly in the baking dish.

Step 5: Mix egg base

In a large bowl, whisk together eggs, heavy cream, garlic powder, salt, and black pepper.

Step 6: Pour and top

Pour the egg mixture evenly over the meat and vegetables. Sprinkle cheese on top.

Step 7: Bake casserole

Bake uncovered for 35–40 minutes until the eggs are set and the top is golden.

Step 8: Rest and serve

Let cool for 5 minutes before slicing. Garnish with parsley if desired.

What Goes Well With Keto Breakfast Casserole

• Avocado slices – Adds creamy healthy fats.
• Fresh green salad – Keeps the meal light and refreshing.
• Low-carb salsa – Adds a tangy kick.
• Cauliflower hash – A great potato substitute.
• Black coffee or herbal tea – Classic keto-friendly drink pairings.

Key Tips for Making Keto Breakfast Casserole

• Drain sausage well – Prevents the casserole from becoming greasy.
• Use full-fat cheese – Fits keto guidelines and adds flavor.
• Avoid high-carb veggies – Skip potatoes, corn, or peas.
• Bake uncovered – Keeps the top firm and golden.
• Let it cool before slicing – Helps hold neat portions.
• Double the recipe for meal prep – Perfect for freezing portions.

Creative Variations of Keto Breakfast Casserole

• Bacon version – Replace sausage with crispy bacon pieces.
• Southwestern style – Add jalapeños, cumin, and pepper jack cheese.
• Mediterranean twist – Use feta, olives, and spinach.
• Dairy-free option – Use unsweetened almond milk and dairy-free cheese.
• Chicken and broccoli – A hearty low-carb variation.

Storage Guidelines for Keto Breakfast Casserole

• Refrigerate leftovers – Store in airtight containers for up to 4 days.
• Freeze slices – Wrap tightly and freeze for up to 2 months.
• Cool completely before storing – Prevents condensation.
• Reheat only once – For best flavor and texture.

Reheating Tips for Keto Breakfast Casserole

• Oven method – Reheat at 325°F (160°C) for 15–20 minutes.
• Microwave option – Warm individual slices for 2–3 minutes.
• From frozen – Bake covered in foil at 350°F (175°C) for 40–45 minutes.

Nutrition Value (per serving):

• Calories: ~320
• Protein: 22g
• Carbohydrates: 5g
• Fat: 24g
• Fiber: 1g
• Sodium: 710mg

FAQs

What vegetables are best for a keto breakfast casserole?

Low-carb vegetables like spinach, mushrooms, zucchini, bell peppers, and broccoli work best. Avoid starchy options such as potatoes, peas, or corn, as they increase the carb count.

Do you cook vegetables before adding them to a keto breakfast casserole?

Yes, vegetables should be sautéed before adding them to the casserole. This removes excess water, helps them soften, and keeps the casserole from turning watery.

Can I make a keto breakfast casserole ahead of time?

Yes, you can assemble the casserole the night before and refrigerate it. Bake it the next morning, adding 5–10 minutes to the cooking time since it starts cold.

How do you know when a keto breakfast casserole is done?

The casserole is ready when the eggs are firm, the top is golden, and a knife inserted in the center comes out clean. This usually takes about 35–40 minutes at 350°F (175°C).

Final Words

This easy keto breakfast casserole is a must-try recipe for anyone who wants a healthy, filling, and low-carb start to the day. It’s simple, versatile, and packed with flavor. Make it ahead for busy mornings or serve it at brunch for a dish that’s sure to please everyone.

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