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Spicy Sausage And Caramelized Onion Casserole

Quick and easy low carb and keto skillet breakfast. It also makes for amazing leftovers. The sweetness of the caramelized onions are what really make this such an awesome breakfast casserole. Spicy Sausage and Caramelized Onion Casserole – You must try this recipes.

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Prep Time 20 minutes
Cook Time 40 minutes
Total Time 1 hour
Servings 9
Calories 444 kcal


  • 3 tablespoons butter
  • 1 large sweet onion, diced
  • 1 pound spicy breakfast sausage
  • 1 (8-ounce) package white mushrooms, sliced
  • 10 large eggs
  • 3/4 cup heavy cream
  • 1 1/2 cups shredded Colby Jack cheese
  • 1/2 teaspoon garlic powder
  • 1/2 teaspoon salt
  • 1/4 teaspoon pepper


  1. Melt butter in a large skillet over medium-low heat. Add onion and cook, stirring occasionally until golden, about 15 minutes. Let cool slightly.

  2. In a second large skillet cook and crumble sausage meat. When sausage is about halfway done, add mushrooms. Continue to cook until sausage is no longer pink and mushrooms are golden brown. Let cool slightly.

  3. In a large bowl, whisk together eggs and heavy cream. Stir in cheese, garlic powder, salt and pepper.

  4. Transfer sausage, mushrooms, and onions to a greased 7×11-inch pan. Pour egg mixture over the top.

Bake for 40 minutes in a 350 degree oven.

Nutrition Facts

Amount Per Serving
Calories 444 Calories from Fat 333
% Daily Value*
Total Fat 37g57%
Saturated Fat 17g85%
Cholesterol 328mg109%
Sodium 715mg30%
Potassium 298mg9%
Total Carbohydrates 4g1%
Sugars 2g
Protein 21g42%


  • To save time, cook the onions a day in advance.
  • Use regular ground sausage and make this casserole non-spicy.
  • Change out the Colby Jack cheese for cheddar cheese or Swiss cheese for a different flavor.
  • Be sure to keep the heat low while cooking the onions or they will burn.
Recipe By Kim

Photo Credit By Shutterstock

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Spicy Sausage And Caramelized Onion Casserole

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