Description

This hearty Breakfast Casserole combines fluffy eggs, savory lean sausage, creamy cottage cheese, colorful bell peppers, spinach, and plenty of melted cheddar for a comforting breakfast that is both satisfying and protein-rich. Every forkful brings together tender vegetables, browned sausage, and gooey cheese.

With no bread or hash browns, this version keeps carbohydrates relatively low while emphasizing protein and nutrient-dense ingredients. It is an excellent high-protein, low-carb breakfast for busy mornings, weekend brunches, or meal prep.

The casserole can be assembled ahead of time and baked when needed, making it especially convenient for families and busy schedules.

Can This Breakfast Casserole Support Weight Loss Goals?

This Breakfast Casserole can fit into a weight-conscious eating pattern because eggs, lean sausage, cottage cheese, and cheese provide substantial protein that can help make a meal satisfying. Vegetables add volume, fiber, and texture without relying on a large amount of starch.

Portion size still matters because cheese and sausage can contribute significant calories and fat. Pairing one serving with additional non-starchy vegetables can create a filling meal while keeping the overall plate balanced.

Does This Breakfast Casserole Fit a High-Protein Lifestyle?

Yes, this recipe is particularly well suited to a high-protein lifestyle, with eggs, cottage cheese, lean sausage, and cheddar providing multiple protein sources. It contains approximately 6g total carbohydrates and 4g net carbs per serving, depending on the ingredients used. Spinach and bell peppers add fiber and micronutrients while keeping the casserole relatively low in carbohydrates. Each serving provides approximately 31g of protein, making it a substantial breakfast or meal-prep option.

Why This Recipe Is Special

High-protein: Eggs, cottage cheese, sausage, and cheese create a protein-rich breakfast.
Low-carb: There is no bread, potatoes, or traditional breakfast starch.
Meal-prep friendly: Individual portions reheat easily throughout the week.
Comforting and cheesy: Melted cheddar gives the casserole a rich, satisfying finish.
Loaded with vegetables: Spinach and bell peppers add color, flavor, and texture.

My Personal Experience

The cottage cheese makes the eggs incredibly tender.
It blends into the egg mixture while adding extra protein and creaminess.
Even people who aren’t fans of cottage cheese may enjoy the finished texture.
The browned sausage adds plenty of savory flavor.
Cooking it before adding it to the casserole gives the meat better color and flavor.
It also prevents excess grease from collecting in the baking dish.
The peppers give every slice a fresh pop of color.
Their slight sweetness works beautifully with the salty cheese and sausage.
Spinach adds another layer of flavor without overpowering the eggs.
It works especially well for meal prep.
I like cutting the cooled casserole into individual portions after baking.
Each portion can then be reheated quickly for an easy protein-rich breakfast.

Perfect For

This Breakfast Casserole is ideal for busy weekday breakfasts, weekend brunches, family breakfasts, meal prep, holiday mornings, potlucks, post-workout meals, and low-carb meal plans.

It can be served on its own or alongside avocado, sliced tomatoes, sautéed mushrooms, or a fresh green salad. It is especially convenient when you want several ready-to-eat breakfasts prepared at once.

Why You’ll Love This Recipe

Packed with protein: One serving provides approximately 31g of protein.
No bread required: The eggs and vegetables create a satisfying casserole without traditional breakfast bread.
Creamy and cheesy: Cottage cheese creates a tender interior while cheddar provides a golden top.
Great for leftovers: The casserole maintains a pleasant texture after gentle reheating.
Easy to customize: Swap the vegetables, cheese, or protein according to your preferences.
One-dish convenience: Once the sausage and vegetables are prepared, everything comes together in one baking dish.

Common Mistakes to Avoid

Adding raw sausage directly to the casserole: Brown and drain the sausage first so the finished casserole isn’t greasy.
Overbaking the eggs: Remove the casserole when the center is just set to prevent a rubbery texture.
Using watery vegetables: Excess moisture from vegetables can make the casserole loose, so sauté high-moisture vegetables first.
Cutting it immediately: Rest the casserole for about 10 minutes after baking so the slices can set properly.

Required Equipment

9 × 13-inch baking dish — Provides enough surface area for even cooking and easy portioning.
Large mixing bowl — Gives plenty of room to whisk the egg mixture thoroughly.
Non-stick skillet — Makes browning the sausage and vegetables easier.
Whisk — Incorporates the eggs and cottage cheese evenly.
Rubber spatula — Helps distribute the ingredients without excessive stirring.
Sharp knife — Makes clean, even portions after the casserole rests.

Storage Instructions

Allow the casserole to cool for no more than about 2 hours at room temperature, then refrigerate leftovers in airtight containers.

Refrigerated portions stay fresh for approximately 3–4 days. For meal prep, divide the casserole into individual containers so each serving can be reheated separately.

For longer storage, wrap individual portions tightly in plastic wrap or freezer-safe material and place them in an airtight freezer container or freezer bag. Freeze for up to 2–3 months.

Thaw frozen portions overnight in the refrigerator before reheating for the best texture.

Recipe Details

Preparation Time: 15 minutes
Cooking Time: 40 minutes
Total Time: 55 minutes
Servings: 8
Best Season: All-season
Total Calories: Approximately 390 calories per serving

Nutrition is an approximate estimate and varies according to the sausage, cheese, cottage cheese, and other brands used.

Short 3-Line Description

This hearty Breakfast Casserole combines eggs, sausage, cottage cheese, vegetables, and melted cheddar in every comforting bite.
It is a protein-rich, lower-carb breakfast without bread or potatoes.
Perfect for weekend brunch, family breakfasts, and make-ahead meal prep.

📝 Ingredients

Protein & Egg Mixture

10 large eggs
1 cup (225g) low-fat cottage cheese
8 oz (225g) lean breakfast sausage, preferably turkey or chicken sausage
1 cup (113g) shredded sharp cheddar cheese, divided

Vegetables

1 cup diced red bell pepper
½ cup diced green bell pepper
2 cups fresh baby spinach
½ cup diced yellow onion
2 cloves garlic, minced

Seasonings

½ teaspoon salt
½ teaspoon black pepper
½ teaspoon smoked paprika
½ teaspoon dried Italian seasoning
¼ teaspoon red pepper flakes, optional

For the Baking Dish

1 teaspoon olive oil or avocado oil

Ingredient notes: Use lean sausage to reduce excess grease. Full-fat cottage cheese can be substituted for a richer texture, but the nutrition values will increase. Choose reduced-sodium sausage and cheese if you want to lower sodium.

Directions

1. Preheat the Oven

Preheat the oven to 375°F (190°C).

Lightly grease a 9 × 13-inch baking dish with olive or avocado oil.

2. Brown the Sausage

Heat a large non-stick skillet over medium heat.

Add the sausage and cook for approximately 6–8 minutes, breaking it into small pieces with a spatula.

Visual cue: The sausage should be completely cooked through and lightly browned.

Drain excess grease if necessary.

3. Sauté the Vegetables

Add the diced onion and bell peppers to the same skillet.

Cook over medium heat for 3–4 minutes.

Add the garlic and cook for another 30 seconds.

Add the spinach and cook for approximately 1–2 minutes, just until wilted.

High-protein tip: Avoid overcooking the vegetables; keeping them slightly firm gives the finished casserole better texture.

4. Prepare the Egg Mixture

Crack the eggs into a large mixing bowl.

Add the cottage cheese, salt, black pepper, smoked paprika, Italian seasoning, and optional red pepper flakes.

Whisk for approximately 45–60 seconds.

Texture cue: The mixture should be evenly combined with the cottage cheese distributed throughout.

5. Combine the Filling

Add the cooked sausage and sautéed vegetables to the egg mixture.

Stir gently until evenly distributed.

Reserve approximately ¼ cup of shredded cheddar for the topping.

6. Fill the Baking Dish

Pour the mixture into the prepared baking dish.

Use a spatula to spread the sausage, vegetables, and eggs into an even layer.

Sprinkle the remaining cheddar evenly over the top.

7. Bake

Place the casserole in the preheated 375°F (190°C) oven.

Bake for approximately 35–40 minutes.

Visual cues: The edges should be set, the cheese should be melted and lightly golden, and the center should have only a very slight jiggle.

8. Check for Doneness

Insert a knife into the center.

The knife should come out mostly clean without liquid egg mixture.

Avoid baking significantly beyond this point because the eggs can become dry and rubbery.

9. Rest Before Cutting

Remove the casserole from the oven.

Let it rest for 10 minutes before slicing.

This allows the egg mixture to finish setting and makes cleaner portions.

10. Garnish and Serve

Cut into 8 equal portions.

Garnish with fresh parsley or sliced green onions if desired.

Serve warm with avocado, tomatoes, sautéed mushrooms, or a simple green salad.

High-Protein Cooking Tips

Use lean turkey or chicken sausage to maintain a strong protein-to-calorie ratio.
Cottage cheese adds protein while keeping the egg mixture moist.
Don’t overload the casserole with watery vegetables.
For an even higher-protein version, use additional egg whites alongside the whole eggs.
Choose a high-protein cottage cheese when available.

Nutrition Facts — Per Serving

Approximate values for 1/8 of the casserole.

Nutrient	Amount
Calories	~390 kcal
Fat	~27 g
Cholesterol	~295 mg
Sodium	~690 mg
Potassium	~380 mg
Total Carbohydrates	~6 g
Fiber	~2 g
Net Carbs	~4 g
Sugars	~3 g
Protein	~31 g
Calcium	~300 mg

These are approximate values. Actual nutrition can vary based on the sausage, cheese, cottage cheese, egg size, and other ingredients selected.

Notes

Storage: Refrigerate leftovers in airtight containers for 3–4 days.
Freezing: Freeze individual portions for up to 2–3 months.
Reheating: Microwave one refrigerated serving for approximately 60–90 seconds, or heat in a 325°F (165°C) oven until warmed through.
Avoid overheating: Excessive reheating can make the eggs tough.
Allergy notes: Contains eggs and dairy; check sausage labels for additional allergens.
Lower-sodium option: Use reduced-sodium sausage, cottage cheese, and cheddar.
Vegetable swaps: Mushrooms, zucchini, broccoli, asparagus, or kale can replace some of the peppers or spinach.
Flavor boost: Add a little smoked paprika, hot sauce, fresh chives, or chopped jalapeño.
Extra protein: Replace part of the whole eggs with liquid egg whites or add extra lean turkey sausage.
Diabetic-friendly consideration: This casserole is relatively low in carbohydrates, but individual dietary requirements differ, so portion size and the rest of the meal should be considered.

Frequently Asked Questions

1. Can I make this Breakfast Casserole ahead of time?

Yes, you can assemble it the evening before, cover it, refrigerate it, and bake it the next morning.

2. Can I use turkey sausage instead of pork sausage?

Absolutely, and lean turkey sausage can provide a lighter option while maintaining the casserole’s savory flavor.

3. Can I make this casserole without cottage cheese?

Yes, although cottage cheese contributes moisture and protein, so the texture will be slightly different.

4. Can I add potatoes?

Yes, but potatoes will significantly increase the carbohydrate content, so they are best omitted for a lower-carb version.

5. Can I freeze individual portions?

Yes, cool the casserole completely, wrap individual portions well, and freeze them for up to 2–3 months.

6. How can I make it even higher in protein?

Use lean turkey sausage, high-protein cottage cheese, and replace some whole eggs with egg whites for an additional protein boost.

Breakfast Casserole