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Slices of sausage egg bake on white plates with the casserole dish to the side, ready to serve.
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4.84 from 6 votes

Sausage Egg Bake

Sausage breakfast casserole that features all the classic toppings of combination pizza like bell peppers, onion, cheese, olives, and tomatoes. This high-protein low-carb breakfast recipe is the perfect way to start the day!
Prep Time20 minutes
Cook Time45 minutes
Total Time1 hour 5 minutes
Course: Breakfast
Cuisine: American
Servings: 12 Servings
Calories: 315kcal
Author: Julia

Ingredients

  • 1 Tbsp avocado oil
  • 1 small red onion chopped
  • 3 large cloves garlic minced
  • 1 (12-oz.) package pre-cooked sausage of choice sliced*
  • 5 ounces baby spinach optional
  • 1 green bell pepper chopped
  • 1 (4-oz) can sliced black olives drained
  • 1 cup cherry tomatoes or 1 large vine ripened tomato, chopped
  • 16 ounces grated cheese of choice **
  • 12 large eggs well-beaten

Instructions

  • Heat the avocado oil in a large skillet over medium-high heat and add the chopped onion. Sauté, stirring occasionally, until the onion begins to soften, about 5 minutes. Add in the fresh minced garlic and sliced sausage links and continue cooking until the sausage begins turning golden brown, about 3 to 5 minutes longer. If adding, add in the baby spinach, cover the skillet, and cook for 2 to 3 minutes, or just until the spinach has wilted.
  • Preheat the oven to 350 degrees F. Lightly spray a large casserole dish with cooking spray. I use a 13” x 9” casserole dish.
  • Transfer the chopped bell pepper, olives, and tomatoes to the bottom of a the prepared baking dish large casserole dish. Add in the onion sausage mixture and stir everything together.
  • Crack eggs into a large bowl and whisk well until the eggs are well-beaten. Stir in half of the grated cheese.
  • Pour the beaten egg mixture into the casserole dish and use a spoon or fork to stir the egg around until everything is in an even layer and it appears as though the ingredients are well-distributed throughout the dish.
  • Sprinkle the remaining cheese on top.
  • Bake on the center rack of the preheated oven for 35 to 45 minutes, or until the edges of the egg bake are golden brown.
  • Allow the cheesy sausage egg bake to cool for 10 minutes before slicing and serving.
  • Serve with any of your favorite toppings like extra grated cheese, sour cream (or Greek yogurt), sliced avocado, and salsa.

Notes

*You can use up to 1 pound of ground breakfast sausage or pick your favorite pork or chicken sausage. I like using chicken sausage for high protein and lower fat. If you use an uncooked ground sausage, be sure to cook the sausage fully before using it in the casserole.
**I use colby jack cheese, but any of your favorite melting cheeses will work. Cheddar cheese, mozzarella cheese, gruyere cheese, and pepper jack cheese are all great options.

Nutrition

Serving: 1slice (of 12) | Calories: 315kcal | Carbohydrates: 6g | Protein: 19g | Fat: 24g | Saturated Fat: 11g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 4g | Cholesterol: 254mg | Sodium: 618mg | Fiber: 1g | Sugar: 2g