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A golden-brown, square portion of Easy Overnight Breakfast Casserole with sausage and peppers in a white baking dish.

Easy Overnight Breakfast Casserole (Crowd Favorite)

This easy overnight breakfast casserole is a crowd-pleasing dish perfect for busy families and hosts. Prepare it the night before for a delicious and hearty breakfast with minimal effort.
Prep Time 15 minutes
Cook Time 45 minutes
Chill Time 10 hours
Total Time 11 hours
Servings: 8 servings
Course: Breakfast
Calories: 385

Ingredients
  

For the Casserole

Equipment

  • 9x13 inch baking pan
  • Large bowl
  • Electric mixer
  • Large skillet
  • Wooden spoon

Method
 

  1. Preheat your oven to 350 degrees F (175 degrees C). Spray a 9x13 inch baking pan with cooking spray.
  2. In a large bowl, combine the eggs, sour cream, milk, cheese, salt, and pepper. Mix on low speed with electric mixers until just combined.
  3. Heat a large skillet over medium heat. Add the sausage and cook until browned, breaking it into small pieces with a wooden spoon. Drain most of the grease and add the cooked sausage to the bowl with the egg mixture.
  4. Add the diced bell peppers and chopped green onions to the same skillet used for the sausage. Sauté for 2-3 minutes until slightly softened. Add the sautéed vegetables to the bowl with the egg mixture and stir everything to combine.
  5. Pour the mixture into the prepared baking pan. Cover and refrigerate overnight (or for at least 6 hours) to allow the flavors to meld.
  6. The next morning, bake the casserole in the preheated oven for 35-50 minutes, or until the edges are set and the center is just barely jiggly.
  7. Let the casserole rest for a few minutes before slicing and serving.

Nutrition

Calories: 385kcalCarbohydrates: 2gProtein: 23gFat: 30gSaturated Fat: 12gCholesterol: 239mgSodium: 669mgPotassium: 327mgSugar: 1gVitamin A: 705IUVitamin C: 11.6mgCalcium: 194mgIron: 1.8mg

Notes

Leftover breakfast casserole can be stored in the refrigerator and enjoyed within 3-4 days. Reheat leftovers in the microwave for a quick and easy meal.

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