High Protein Egg Casserole

The smell of smoked paprika drifting through the kitchen on a lazy Sunday morning is enough to make anyone stumble out of bed. I started making this egg casserole during a phase when I was obsessed with meal prep and tired of soggy leftovers. Cottage cheese in eggs sounded bizarre until I tried it and realized it creates this incredibly creamy, almost custardy texture without a drop of cream. Now it is the dish I make when friends sleep over and I want to seem like I have my life together.

One rainy morning my roommate walked in, saw me dumping cottage cheese into a bowl of beaten eggs, and gave me the most concerned look I have ever received. She changed her tune after the first bite and now texts me every weekend asking when I am making it again.

Ingredients

• 8 large eggs: The backbone of the whole dish, use room temperature eggs for the most even cooking.
• 1 cup low fat cottage cheese: This is the secret weapon that makes the casserole creamy and boosts protein without anyone knowing.
• 1 cup shredded reduced fat cheddar cheese: Sharp cheddar gives the best flavor but mild works fine too.
• 200 g lean turkey sausage or chicken breast cooked and diced: Turkey sausage adds incredible savory depth but diced chicken breast keeps it leaner.
• 1 red bell pepper diced: Adds sweetness and color, do not skip this one.
• 1 small onion finely chopped: Yellow or white onion both work, just cook it down until sweet.
• 2 cups baby spinach roughly chopped: It wilts down to almost nothing so do not be alarmed by the amount.
• 1 tsp olive oil: Just enough to soften the vegetables without making things greasy.
• 1/2 tsp black pepper: Fresh cracked is always better if you have it.
• 1/2 tsp salt: Adjust depending on how salty your sausage or cheese is.
• 1/2 tsp smoked paprika: This is what makes your kitchen smell unbelievable while it bakes.
• 1/2 tsp dried oregano: A subtle herb note that ties everything together.

Instructions

Preheat and prep the dish:

Set your oven to 180 degrees C which is 350 degrees F and grease a 9 by 13 inch baking dish with a thin smear of olive oil so nothing sticks later.

Soften the vegetables:

Heat olive oil in a skillet over medium heat and sauté the onion and bell pepper for about 3 to 4 minutes until they soften and smell sweet. Toss in the spinach and stir for just one more minute until it wilts down then pull the pan off the heat.

Build the egg mixture:

Crack all eight eggs into a large bowl and beat them well then whisk in the cottage cheese, cheddar, salt, pepper, paprika, and oregano until everything is combined. Fold in your cooked diced meat and the sautéed vegetables with a spatula.

Pour and spread:

Transfer the whole mixture into your prepared baking dish and spread it out evenly so it cooks uniformly.

Bake until golden:

Slide it into the oven and bake for 35 to 40 minutes until the center is set and no longer jiggly and the top has turned a gorgeous golden color.

Rest and serve:

Let the casserole sit for about 5 minutes before slicing into squares because it will hold its shape much better and nobody burns their tongue.

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I brought this to a potluck brunch once and watched three people ask for the recipe before they even finished their first plate. That is the moment I knew this casserole was a keeper.

Making It Your Own

Mushrooms, zucchini, sun dried tomatoes, or even leftover roasted potatoes can go straight into this casserole with great results. The only thing to watch is wet vegetables because too much moisture will keep the center from setting properly.

Storage and Reheating

This keeps in the fridge for up to four days and reheats in the microwave in about 90 seconds which makes it ideal for grab and go breakfasts. I usually cut the whole pan into squares and store them in individual containers so mornings require zero thinking.

Serving Suggestions

A simple green salad on the side turns this into a proper brunch and fresh fruit balances the richness beautifully. A squeeze of hot sauce on top is never a bad idea.

• Try it with a dollop of plain Greek yogurt instead of sour cream for extra protein.
• Leftover squares are surprisingly good eaten cold straight from the fridge.
• Always let it rest those five minutes before cutting because patience pays off here.

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This casserole is proof that healthy food does not have to be boring or complicated. Make it once and it will become part of your permanent rotation.

Recipe Questions & Answers

→ Can I prepare this casserole the night before?

Absolutely. Assemble the mixture in the baking dish, cover tightly with foil or plastic wrap, and refrigerate overnight. Bake as directed the next morning, adding 5-10 minutes to the cooking time if baking cold from the refrigerator.

→ What vegetables work well in this dish?

Beyond the suggested bell peppers, onions, and spinach, try adding diced zucchini, mushrooms, or broccoli. For a sweeter profile, incorporate butternut squash or diced sweet potatoes. Avoid very watery vegetables like tomatoes unless you drain them well.

→ How do I store and reheat leftovers?

Store cooled portions in airtight containers in the refrigerator for up to 4 days. For longer storage, wrap individual squares in plastic wrap and freeze for up to 3 months. Reheat in the microwave at 50% power for 2-3 minutes or in a 350°F oven for 10-15 minutes until warmed through.

→ Can I make this vegetarian?

Yes. Simply omit the meat or substitute plant-based sausage crumbles. You might add extra vegetables or increase the cheese slightly to maintain protein content. For equal protein, consider adding cooked quinoa, hemp hearts, or additional eggs.

→ Why does the recipe call for both cottage cheese and cheddar?

Cottage cheese provides moisture and a creamy texture while keeping fat content lower than using all cheddar. Shredded cheddar melts beautifully and creates the golden, bubbly top layer. The combination balances flavor, texture, and nutritional profile effectively.