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A close-up of a sausage and egg breakfast casserole in a white baking dish with a slice removed to show the fluffy interior.

High Protein Cottage Cheese Turkey Sausage Breakfast Casserole

Start your day with a powerhouse of flavor and nutrition! This High Protein Cottage Cheese Turkey Sausage Breakfast Casserole is an easy-to-make, savory dish packed with lean protein, vegetables, and creamy cottage cheese, perfect for meal prep or a hearty family breakfast.
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Prep Time 20 minutes
Cook Time 35 minutes
Total Time 55 minutes
Servings: 6 servings
Course: Breakfast, Main Course
Cuisine: American
Calories: 317
Ingredients Equipment Method Notes

Ingredients
  

For the Casserole Base
  • 1 tbsp olive oil
  • 1 lb lean ground turkey (93/7 or 99/1)
  • 1/2 large yellow onion finely diced
  • 1 bell pepper any color, finely diced
  • 2 cloves garlic minced
  • 5 oz fresh spinach
  • 16 oz high-protein cottage cheese (about 2 cups)
  • 8 large eggs
  • 1/4 cup unsweetened almond milk or regular milk
  • 1 tsp dried sage or poultry seasoning
  • 1/2 tsp smoked paprika
  • 1/2 tsp salt
  • 1/4 tsp black pepper
  • 1/4 cup shredded low-fat cheddar or mozzarella optional, for topping

Equipment

  • 9x13 inch baking dish
  • Large Skillet
  • Large mixing bowl
  • Whisk

Method
 

Prep and Sauté
  1. Preheat your oven to 375°F (190°C). Lightly grease a 9x13 inch baking dish.
  2. Heat the olive oil in a large skillet over medium-high heat. Add the ground turkey and break it apart with a spoon. Cook until the turkey is fully browned, about 5-7 minutes. Drain any excess fat.
  3. Add the diced yellow onion and bell pepper to the skillet with the cooked turkey. Cook, stirring occasionally, until the vegetables begin to soften, about 5-7 minutes.
  4. Stir in the minced garlic and fresh spinach. Cook for another 2-3 minutes, or until the spinach has completely wilted. Remove the skillet from the heat.
Combine and Bake
  1. In a large mixing bowl, whisk together the cottage cheese, eggs, unsweetened almond milk, dried sage, smoked paprika, salt, and black pepper until well combined and smooth.
  2. Add the cooked turkey and vegetable mixture from the skillet into the egg and cottage cheese mixture. Stir thoroughly to ensure all ingredients are evenly distributed.
  3. Pour the entire casserole mixture into the prepared baking dish. If desired, sprinkle the optional shredded low-fat cheddar or mozzarella evenly over the top.
  4. Bake for 35-40 minutes, or until the casserole is set in the center and lightly golden brown on top. A knife inserted into the center should come out clean.
Serve
  1. Remove the casserole from the oven and let it rest for 5-10 minutes before slicing and serving. This allows it to firm up and makes for cleaner cuts.

Notes

This casserole is fantastic for meal prepping! Once cooled, cut into individual portions and store in airtight containers in the refrigerator for up to 3-4 days. Reheat in the microwave or oven until warmed through. You can also customize by adding other vegetables like mushrooms or zucchini.