Keto Breakfast Casserole with Sausage and Cheese
A hearty, cheesy casserole packed with sausage, eggs, and vegetables, baked to golden perfection for a satisfying morning meal. This american-inspired breakfast (high protein) ready in about 50 minutes combines (340g) bulk pork sausage, diced bell peppers, diced onion into a breakfast that fuels the morning without the midday crash — make-ahead-friendly and balanced enough to anchor the first meal of the day. Each serving lands at about 445 calories and feeds 4, so it sits comfortably in a weekly breakfast rotation alongside fruit, yogurt, or coffee. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.
Ingredients
- 12 oz (340g) bulk pork sausage
- 1/2 cup, diced bell peppers
- 1/2 cup, diced onion
- 1/4 cup (35g) shredded cheddar cheese
- 1/4 cup (35g) shredded mozzarella cheese
- 6 large eggs
- 1/4 cup (60ml) heavy cream
- 1/2 tsp dried thyme
- 1/4 tsp salt
- 1/4 tsp black pepper
- 2 tbsp olive oil
Instructions
- Step 1: Preheat oven to 375°F (190°C). Heat 1 tbsp olive oil in a large oven-safe skillet over medium heat.
- Step 2: Add bulk sausage, diced bell peppers, and diced onion to skillet. Cook for 5-7 minutes, breaking up sausage with a spoon, until meat is browned and vegetables are tender.
- Step 3: In a medium bowl, whisk together eggs, heavy cream, dried thyme, salt, and pepper until well combined.
- Step 4: Pour egg mixture over sausage and vegetable mixture in skillet. Sprinkle shredded cheddar and mozzarella cheeses evenly over the top.
- Step 5: Transfer skillet to oven and bake for 25-30 minutes until eggs are set and top is golden brown (knife inserted should come out clean).
- Step 6: Let rest for 5 minutes before slicing and serving.
Equipment for this recipe
Top-rated tools to make this recipe successfully.
Frequently asked questions
How long does Keto Breakfast Casserole with Sausage and Cheese take to make?
Total time is about 50 minutes (20 min prep + 30 min cook). Most home cooks find this fits comfortably into a busy morning; prep components the night before to save active time.
How do I store leftover Keto Breakfast Casserole with Sausage and Cheese?
Cool to room temperature within 2 hours, then store in an airtight container in the fridge for up to 4 days. Reheat in the microwave or oven; egg- or grain-based items may need a splash of milk or water to refresh texture. Cold-served items (overnight oats, smoothies) keep 2–3 days in the fridge.
Can I substitute ingredients in Keto Breakfast Casserole with Sausage and Cheese?
Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.
How do I scale Keto Breakfast Casserole with Sausage and Cheese for a different number of people?
The recipe is written for 4 servings. Multiply each ingredient by (your serving target / 4). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.
Is Keto Breakfast Casserole with Sausage and Cheese high protein?
Yes — this recipe is tagged high protein based on its ingredient list. Always cross-check labels for packaged ingredients (sauces, broths, condiments) since formulations vary by brand.
What others are saying
- ★★★★★
Substituted chicken for tofu and it worked beautifully.
- ★★★★☆
Really good but took about 10 minutes longer than stated.
- ★★★★☆
Enjoyable meal. Instructions could be a touch more detailed on the timing.
