High Protein Egg Casserole

The alarm went off at five on a cold January morning and my only motivation for leaving bed was knowing this casserole was waiting in the fridge. I had assembled it the night before during a Sunday meal prep session, and the smell that hit me when I opened the oven that morning was pure comfort. Ten eggs, lean turkey sausage, and a handful of vegetables somehow became the thing that got me through an entire work week without once stopping at a drive through.

My roommate walked into the kitchen just as I pulled the casserole from the oven and stood there speechless for a solid ten seconds before asking what smelled so good. We ate standing at the counter with forks straight from the dish and never even made it to the table.

Ingredients

• 10 large eggs: The foundation of the whole dish so buy the best quality you can find and let them come to room temperature for easier whisking.
• 200 g lean turkey sausage: Pre cook and crumble it finely so every bite gets a bit of savory meat without excess grease pooling in the pan.
• 120 g low fat cottage cheese: Blend it smooth if the curds bother you or leave them whole for little pockets of creaminess throughout.
• 100 g shredded reduced fat cheddar cheese: Reserve half for the top because that golden melt is what makes it look like a real meal.
• 1 red bell pepper: Dice it small and uniform so it cooks through evenly and adds a sweet crunch.
• 1 small onion: Yellow or white both work and dicing it fine prevents big chewy chunks.
• 80 g baby spinach: Rough chop is fine and it wilts down to almost nothing so do not be alarmed by how much goes in raw.
• 1 tsp garlic powder, 1/2 tsp smoked paprika, 1 tsp salt, 1/2 tsp black pepper: Smoked paprika is the one that surprises people with a subtle warmth that makes this taste far more complex than it is.

Instructions

Preheat and prepare the dish:

Set your oven to 180 degrees Celsius or 350 degrees Fahrenheit and grease a 22 by 33 centimeter casserole dish with a light coating of oil or cooking spray so nothing sticks.

Whisk the egg base:

Crack all ten eggs into a large bowl then add cottage cheese, garlic powder, smoked paprika, salt, and pepper, whisking until the mixture looks smooth and the spices are evenly distributed.

Fold in the fillings:

Gently stir in the cooked crumbled turkey sausage, diced bell pepper, onion, chopped spinach, and half the cheddar cheese until everything is evenly coated in the egg mixture.

Assemble the casserole:

Pour the entire mixture into your prepared baking dish and use a spatula to spread it into an even layer, then sprinkle the remaining cheddar cheese across the top.

Bake until set:

Place the dish uncovered in the center of your oven and bake for 30 to 35 minutes until the edges pull away slightly and the top turns a light golden color with no jiggle in the middle.

Rest and serve:

Let it cool for five minutes before slicing because the casserole finishes setting as it sits and cutting too early gives you messy portions.

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I started making a double batch every Sunday and storing individual slices in containers for the week. By Wednesday my coworkers were jealous enough that I started bringing extras to share.

Make It Your Own

Swap the turkey sausage for lean chicken sausage or a plant based alternative and the structure holds up perfectly. Toss in mushrooms, zucchini, or leftover roasted potatoes if you have them sitting in the fridge.

Storage and Reheating

Covered tightly in the refrigerator this casserole lasts four to five days without losing texture or flavor. Reheat individual slices in the microwave for about ninety seconds or in a low oven for eight minutes if you prefer the edges crispy again.

Serving Suggestions

A spoonful of salsa on top brightens every bite with acidity that balances the richness of the eggs and cheese. Fresh avocado slices or a handful of arugula on the side turn a simple slice into a complete plate.

• Hot sauce is never a bad idea if you like a morning kick.
• A slice of whole grain toast on the side adds fiber without undoing the low carb profile.
• Let the casserole rest those full five minutes because patience here really does pay off.

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This is the kind of recipe that quietly becomes a staple before you even realize it happened. Make it once and you will understand why it never leaves my weekly rotation.

Recipe FAQ

→ Can I make this casserole ahead of time?

Absolutely. This bake stores well in the refrigerator for up to 5 days. Simply reheat individual portions in the microwave for 1-2 minutes or warm the entire dish at 180°C (350°F) for about 15 minutes.

→ What other proteins work in this dish?

Lean chicken sausage, crumbled bacon, or diced ham make excellent substitutes for turkey sausage. For a vegetarian version, try plant-based sausage crumbles or increase the cottage cheese and add extra vegetables.

→ Can I freeze this casserole?

Yes, freeze the baked and cooled casserole in portions or whole. Wrap tightly in plastic and foil for up to 3 months. Thaw overnight in the refrigerator before reheating.

→ What vegetables can I add?

Mushrooms, zucchini, diced tomatoes, or broccoli florets work wonderfully. Just keep total vegetable amounts around 2 cups to maintain proper texture and cooking time.

→ Is this suitable for a low-carb diet?

With only 5 grams of carbohydrates per serving, this casserole fits well into low-carb and keto eating plans. The high protein content helps keep you satisfied throughout the morning.

→ Can I use regular cottage cheese instead of low-fat?

Yes, full-fat cottage cheese works perfectly and adds extra richness. The baking time remains the same, though the calorie count will increase slightly.