Keto Breakfast Casserole

Total Time Prep: 20 min. Bake: 30 min. + standing
Yield 12 servings
Test Kitchen Approved
A keto breakfast casserole that's loaded with eggs, bacon, sausage, veggies and cheese? Yes, please! It's easy to meet your macros when you have a recipe that tastes this delicious.

Ingredients

  • 1/2 pound bacon strips, chopped
  • 1/2 pound bulk pork sausage or turkey sausage
  • 1 cup finely chopped sweet red pepper
  • 1 cup sliced halved zucchini
  • 3 cups baby kale or fresh baby spinach
  • 12 large eggs
  • 3/4 cup heavy whipping cream
  • 1/2 teaspoon kosher salt
  • 1/2 teaspoon pepper
  • 1/2 teaspoon onion powder
  • 1/2 teaspoon garlic powder
  • 1/2 teaspoon paprika
  • 1/2 teaspoon dried oregano or 1 tablespoon minced fresh oregano
  • 1 cup shredded sharp cheddar cheese, divided
  • 1 cup shredded Gruyere cheese, divided

Directions

  1. Preheat oven to 375º. In a large skillet, cook bacon over medium heat until crisp. Remove with a slotted spoon to a paper towel-lined plate; drain.
  2. In the same skillet, cook sausage over medium heat until no longer pink, breaking into crumbles. Remove with a slotted spoon to a paper towel-lined plate. Discard drippings, reserving 1 tablespoon in pan. Cook pepper and zucchini in drippings until crisp-tender, 3-4 minutes, stirring occasionally. Add kale; cook and stir until kale is wilted and pepper and zucchini are tender, 3-4 minutes longer. Remove from the heat. Stir in cooked bacon and sausage. Transfer to a greased 13x9-in. baking dish.
  3. In a large bowl, whisk eggs, cream and seasonings. Stir in 1/2 cup cheddar and 1/2 cup Gruyere. Pour over vegetable mixture. Sprinkle with remaining 1/2 cup cheddar and 1/2 cup Guyere.
  4. Bake until set and slightly puffed, about 30 minutes. Let stand 10 minutes before serving.

Nutrition Facts

1 piece: 288 calories, 23g fat (11g saturated fat), 240mg cholesterol, 522mg sodium, 3g carbohydrate (1g sugars, 1g fiber), 16g protein.

Start your day with this high-protein, low-carb and keto-friendly breakfast casserole. Stuffed with ingredients like bacon, sausage, zucchini, red peppers and Gruyere cheese, it’s a meal brimming with big flavors. —Lauren Habermehl, Pewaukee, Wisconsin
Recipe Creator

© 2025 RDA Enthusiast Brands, LLC