Protein Cottage Cheese Egg Casserole

If you’re looking for a high-protein breakfast that’s easy to make and full of flavor, this Protein Cottage Cheese Egg Casserole is the perfect dish. It’s packed with protein from eggs, cottage cheese, and breakfast sausage, making it a nutritious and satisfying way to start your day. Plus, it’s loaded with veggies and melty cheddar cheese for a deliciously balanced meal.

A baked casserole with a golden top, missing one square piece, sits in a blue-edged dish on a marble surface next to a checkered cloth and some vegetables.

This recipe is also ideal for meal prep and is perfect for those busy mornings when you need a breakfast on the go. Simply bake, slice into individual portions, and store them for a quick and easy meal anytime. This casserole is also a great addition to your weekly meal plan—just pack a portion in your container, and you have a ready-made, nutritious breakfast or lunch.

For another quick easy breaskfast with eggs make sure to try this air fryer egg bites.

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Notes on Ingredients
Step-by-Step Instructions
Tips for Success
Variations of the Recipe
What to Serve With This Casserole
FAQ
Recipe
Protein Cottage Cheese Egg Casserole

Notes on Ingredients

Breakfast Sausage: You can use pork, turkey, or chicken sausage. Look for nitrate-free options for a healthier choice.
Cottage Cheese: Adds protein and creaminess. Use full-fat for the best texture, or swap with Greek yogurt for a different flavor.
Cheese: Cheddar works best, but you can use mozzarella, pepper jack, or feta for variety.
Vegetables: Feel free to add mushrooms, spinach, or zucchini for extra nutrients.
Tomatoes: Fresh cherry tomatoes work best, but you can use sun-dried tomatoes for a more intense flavor.

Step-by-Step Instructions

Step 1: Cook the Sausage and Vegetables

Preheat your oven to 375°F (190°C).
In a large skillet over medium heat, cook the breakfast sausage until browned and fully cooked. Break it into small crumbles as it cooks.
Add the diced onion and bell pepper to the skillet and sauté until softened (about 3-4 minutes). Remove from heat and set aside.

Step 2: Prepare the Egg Mixture

In a large mixing bowl, whisk together the eggs, cottage cheese, salt, and black pepper until well combined.

Step 3: Assemble the Casserole

Lightly grease a 9x13-inch baking dish with butter or cooking spray.
Spread the sausage mixture evenly in the dish.
Pour the egg mixture over the sausage and vegetables.
Evenly distribute the cherry tomatoes on top.
Sprinkle the shredded cheddar cheese over everything.

A frying pan with chopped yellow bell peppers and onions cooking on a stovetop, surrounded by eggs, cherry tomatoes, parsley, salt, and pepper shakers on a white surface.

A bowl of egg mixture with sliced cherry tomatoes and herbs sits next to shredded cheese, parsley, and salt and pepper on a white countertop.

A rectangular baking dish filled with an unbaked casserole mixture, topped with shredded cheddar cheese.

Step 4: Bake

Place the casserole in the preheated oven and bake for 30 minutes, or until the eggs are set and the cheese is golden and bubbly.
Remove from the oven and let it rest for 5 minutes before slicing.
Garnish with fresh parsley and serve warm.

A baked casserole topped with chopped parsley in a white rectangular dish with blue handles, set on a wooden board beside a checkered cloth.

Tips for Success

Whisk the eggs well to ensure a light and fluffy texture.
Drain excess grease from the sausage before adding it to the casserole.
Let the casserole rest for a few minutes after baking to help it set properly.
Use a glass or ceramic baking dish for even cooking and to prevent sticking.
Make it spicy by adding red pepper flakes or diced jalapeños.

Variations of the Recipe

Keto-Friendly: Use extra cheese and swap the bell pepper for low-carb vegetables like spinach or mushrooms.
Vegetarian: Replace the sausage with sautéed mushrooms or plant-based sausage.
Mexican-Inspired: Add taco seasoning to the eggs and top with avocado and salsa.
Dairy-Free: Use dairy-free cheese and replace cottage cheese with unsweetened coconut yogurt.
Mediterranean: Add feta cheese, olives, and sun-dried tomatoes for a Mediterranean twist.

What to Serve With This Casserole

Fresh fruit – A side of berries or sliced oranges balances the meal.
Avocado slices – Adds healthy fats and creaminess.
Toast or English muffin – A great way to round out the meal.
Greek yogurt with honey – For extra protein and a touch of sweetness.
Hot sauce or salsa – Adds a flavorful kick.

FAQ

Can I use egg whites instead of whole eggs?

Yes! Substitute 10 whole eggs with 15 egg whites for a lower-fat version.

How do I know when the casserole is done?

Insert a knife into the center—if it comes out clean, it’s ready!

Can I double the recipe?

Yes! Use a larger baking dish or make two separate casseroles.

A slice of savory casserole on a white plate with a fork, garnished with cherry tomatoes and parsley, with a casserole dish and a checkered cloth in the background.

Recipe