Cottage Cheese Egg Casserole

This Cottage Cheese Egg Casserole is packed with protein, loaded with fresh veggies, and makes a deliciously easy breakfast or brunch option. It bakes up light, fluffy, and satisfying, making it perfect for meal prep, weekend gatherings, or busy mornings when you need something hearty and wholesome. With simple ingredients and minimal prep, it’s a go-to recipe you’ll want in your regular rotation.

Easy Cottage Cheese Egg Casserole Recipe

On busy weekday mornings, dishes like this cottage cheese egg bake are an absolute lifesaver. With just a few minutes of prep, I can pop it into the oven and have a warm, protein-packed breakfast ready for everyone without any fuss. It also reheats beautifully, making it perfect for meal prep, Sunday brunch, grab-and-go breakfasts, or quick weekday lunches.

This high-protein breakfast is perfectly customizable with a variety of mix-ins to keep your guests and family satisfied. Whether you’re feeding a family or planning ahead for the week, this easy egg casserole keeps busy mornings simple, satisfying, and stress-free.

Checkout this quick list of ingredients you’ll need to make high protein Cottage Cheese Eggs: (Scroll down for the full printable recipe card.)

Whole Eggs – One dozen eggs form the base of the egg casserole.
Small Curd Cottage Cheese – Adds protein and texture.
Breakfast Sausage – One pound pork sausage adds protein.
Onion – Sweet onion expands the flavor profile. You could also use red onion or yellow onion for a stronger onion flavor.
Peppers – Red bell pepper and green chiles amp up the flavor.
Liquid – Half and half or whole milk thins the egg mixture.
Cheese – Shredded sharp cheddar cheese and Parmesan cheese for a melty cheesy taste.
Mustard – Dijon mustard gives the egg mixture a sharp tangy flavor.
Spices – Seasoned salt, granulated garlic, black pepper, onion powder.
Spinach – Baby spinach adds color.
Fresh Herbs – Fresh parsley for an herby flavor and color.

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How to Make the BEST Cottage Cheese Egg Casserole Recipe

Heat Oven and Prepare Dish – Preheat the oven to 350°F. Spray a 13×9-inch baking dish with nonstick cooking spray. Set aside.
Brown Sausage – Cook sausage, onion and red bell pepper over medium-high heat until no pink remains. Drain excess grease from pan.
Make Egg Mixture – Whisk together the eggs, cottage cheese, green chiles, Parmesan, half and half, seasoned salt, granulated garlic, black pepper, onion powder and Dijon mustard until fully combined. Add chopped spinach, stir to distribute.
Assemble the Casserole – Layer the sausage mixture onto the bottom of the prepared baking dish. Top with 1 1/2 cups cheddar cheese.
Add Egg Mixture – Carefully pour the egg mixture over the sausage and cheese. Sprinkle the top with chopped parsley and reserved 1 cup cheese.
Oven – Bake per the cooking time in the recipe until puffed and lightly golden brown and the center is set when gently shaken. (You can check it with a toothpick inserted into the center, too.)
Let stand for 5 minutes then slice and serve garnished with parsley or green onions.

Kitchen Equipment to Make Cottage Cheese Egg Casserole

13×9-inch casserole dish or baking pan.
Large mixing bowl for making the egg mixture.
Whisk for whipping the eggs. You could also process the eggs in a stand blender or using an immersion blender.
Medium skillet for sautéing the sausage, bell pepper and onion.
Cheese grater because freshly grated cheese has more moisture and flavor.
Measuring cups and spoons for accurate measurements.

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Recipe Variations, Tips and Substitutions

Cheese – You could use any variety of shredded cheese or cheese blend, that you enjoy. Sharp cheddar cheese, gruyere cheese, monterey jack cheese, swiss cheese, mozzarella cheese or pepper jack cheese for a hint of spice.
Eggs – You could adapt this recipe using the equivalent of egg whites or combine the two using one half eggs and one half egg whites. Changing the eggs will change the volume.
Protein – You could swap out the sausage using ham or crispy bacon. You could also use chorizo sausage for a little heat, turkey sausage or turkey bacon.
Half and Half – You could use heavy cream or whole milk.
Peppers – You could use yellow bell peppers, poblano pepper or jalapeno peppers.
Vegetables – You could add zucchini or sauté your favorite variety of mushrooms along with the sausage mixture. You could also add cherry tomatoes, cut in half. to the top of the egg cottage cheese casserole prior to sprinkling the final layer of cheese on top just before baking.
Fresh Herbs – You could use fresh chives or fresh basil.
Toppings – You can serve this egg casserole on toasted bread or a buttermilk biscuit as a breakfast sandwich. You could also serve it topped with sour cream, salsa or diced avocado.

Storage and Leftovers

Make-Ahead Tip: You can fully assemble this cottage cheese egg casserole one day in advance and cover with plastic wrap. Pop it into the fridge overnight, then allow 15-20 minutes on the counter before baking per the recipe.
Leftovers – Store leftover Cottage Cheese Egg Casserole covered with aluminum foil or in an airtight container chilled in the refrigerator for up to 4-5 days.
Reheating – Reheat gently in single servings in the microwave.
Freezer – After baking you can freeze leftovers for up to 2 months. Thaw in the fridge and reheat just before serving.

More Breakfast Casseroles to Make

Monte Cristo Casserole is a tasty meal option for any time of day.
Hashbrown Breakfast Casserole is a filling breakfast the whole family will love.
Overnight Eggs Benedict Casserole drizzled with hollandaise sauce.
On busy oven days and holiday breakfasts, this Crockpot Breakfast Casserole is just the ticket.
Southern Grits and Greens Casserole is the best of both worlds.
Praline Pecan French Toast Casserole is the perfect make-ahead indulgence.
Breakfast Enchiladas are sure to kick start your day.

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