High Protein Egg Casserole (Printable)

Protein-rich egg casserole with turkey sausage, cottage and cheddar, bell pepper and spinach — great for make-ahead breakfasts.

# What You'll Need:

→ Proteins

01 - 10 large eggs
02 - 7 oz lean turkey sausage, crumbled and pre-cooked
03 - ½ cup low-fat cottage cheese
04 - 1 cup shredded reduced-fat cheddar cheese, divided

→ Vegetables

05 - 1 red bell pepper, diced
06 - 1 small onion, diced
07 - 3 oz baby spinach, roughly chopped

→ Seasonings

08 - 1 tsp garlic powder
09 - ½ tsp smoked paprika
10 - 1 tsp salt
11 - ½ tsp black pepper

# How To Make:

01 - Preheat oven to 350°F. Grease a 9x13 inch casserole dish with non-stick spray or butter.
02 - In a large mixing bowl, whisk together the eggs, cottage cheese, garlic powder, smoked paprika, salt, and black pepper until thoroughly combined.
03 - Gently stir in the cooked crumbled turkey sausage, diced bell pepper, onion, chopped spinach, and half of the shredded cheddar cheese until evenly distributed.
04 - Pour the egg mixture into the prepared casserole dish, spreading it into an even layer. Sprinkle the remaining cheddar cheese uniformly across the top.
05 - Bake uncovered for 30 to 35 minutes, or until the center is fully set and the top is lightly golden. A knife inserted in the middle should come out clean.
06 - Remove from the oven and let the casserole rest for 5 minutes before slicing into portions. Serve warm.

# Expert Tips:

01 -
  • Cottage cheese blended into the eggs creates this incredibly creamy texture without needing heavy cream or excess fat, and honestly it feels like a cheat code.
  • It reheats beautifully, which means you can make it on Sunday and have a real breakfast ready every morning without lifting a finger.
02 -
  • Do not skip pre cooking the sausage because raw sausage in the egg mixture will release too much grease and make the casserole soggy in the worst way.
  • The casserole will puff up dramatically while baking and then sink as it cools, so do not panic when it deflate, that is completely normal.
03 -
  • Whisk the cottage cheese and eggs together first before adding any other ingredients, because this ensures the creamiest texture without any unexpected lumps.
  • Squeeze excess moisture out of the spinach with a paper towel before adding it, since even a little extra water can make the difference between a firm slice and a watery mess.