Go Back
Bird's-eye view of a casserole with sausage, eggs, spinach, bell peppers, and onion.

Sausage and Egg Whole30 Breakfast Casserole

Egg and sausage casserole with peppers and spinach, baked for a hearty Whole30 breakfast.
Prep Time 10 minutes
Cook Time 30 minutes
Total Time 40 minutes
Course Breakfast
Cuisine American
Servings 12 servings

Ingredients
  

  • 1 lb Whole30 approved breakfast sausage or this turkey sausage if not Whole30
  • olive oil for pan
  • 1 white or yellow onion, diced
  • 1 green bell pepper, diced
  • 1 red bell pepper, diced
  • 2 cups fresh spinach, chopped (or 16 oz frozen, thawed and drained)
  • 1/2 tsp garlic powder
  • 1 tsp salt-free Mrs. Dash Onion & Herb Seasoning + sprinkle on top of casserole
  • salt and pepper to taste
  • 12 large eggs
  • hot sauce optional to taste

Instructions
 

  • Preheat Oven:

    Heat oven to 350°F (175°C).
  • Prep Vegetables:

    Cut peppers and onion into small cubes; slice spinach. Reserve.
  • Beat Eggs:

    In a medium bowl, break 12 eggs and beat thoroughly. Optionally add a few drops hot sauce and mix until uniform.
  • Cook Sausage:

    In a large skillet over medium-high heat, lightly coat with olive oil and cook turkey sausage until no longer pink. Remove meat, drain, and set aside.
  • Sauté Vegetables:

    In the same skillet over medium heat, sauté diced peppers and onion until they begin to soften, roughly 2 minutes. Stir in chopped spinach and cook an additional 1 minute. Take off heat.
  • Combine Sausage and Veggies:

    Return turkey sausage to the skillet and add all seasonings. Mix until evenly distributed.
  • Transfer to Baking Dish:

    Transfer sausage and vegetable blend to a glass 9x13-inch baking dish previously sprayed with non-stick olive oil.
  • Add Egg Mixture:

    Pour the egg mixture over the top and sprinkle evenly with onion and herb seasoning.
  • Bake Casserole:

    Bake for 25-30 minutes, until a knife inserted in the center emerges clean.
  • Rest and Serve:

    Allow to rest 5-10 minutes before cutting and serving. Optionally garnish with salsa.
Keyword easy and healthy breakfast, easy breakfast casserole, easy breakfast for a crowd, easy high protein breakfast, easy keto breakfast, easy low calorie breakfast, healthy easy breakfast, sausage and egg whole30 breakfast casserole