This Spicy Sausage and Caramelized Onion Breakfast Casserole is one of my favorite low carb/keto breakfasts. The sweetness of the caramelized onions are what really make this such an awesome breakfast casserole.
I have to push myself to come up with different ways to turn eggs into low carb breakfasts. As much as I like eggs, I can get tired of them real quick.
Breakfast cesseroles are my favorite type of breakfast to cook. I love that they will last me at least three breakfasts.
This low carb casserole reheats well for at least 3 days. It has all the things a good breakfast casserole should have. Lots of spicy ground sausge and cheese plus mushrooms and caramelized onions. There’s lots of different flavors in every bite. Caramelized onions take a little time and patience to make but they are divine and they really stand out in this casserole.
Tips for making Spicy Sausage and Caramleized Onion Breakfast Casserole:
- 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.
More Low Carb Breakfasts
- Low Carb Sausage Breakfast Casserole
- Air Fryer Low Carb Bacon, Egg, and Cheese Roll-ups
- Bacon and Egg Cups
Spicy Sausage and Caramelized Onion Breakfast Casserole
This Spicy Sausage and Caramelized Onion Breakfast Casserole is one of my favorite low carb/keto breakfasts. The sweetness of the caramelized onions are what really make this such an awesome breakfast casserole.
Ingredients
- 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
Instructions
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Melt butter in a large skillet over medium-low heat. Add onion and cook, stirring occasionally until golden, about 15 minutes. Let cool slightly.
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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.
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In a large bowl, whisk together eggs and heavy cream. Stir in cheese, garlic powder, salt and pepper.
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Transfer sausage, mushrooms, and onions to a greased 7x11-inch pan. Pour egg mixture over the top.
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Bake for 40 minutes in a 350 degree oven.
Nutritional info is provided as a guide only and can vary based on products and cooking methods used.
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