4.75 from 4 votes
A close up of an easy breakfast casserole
Sallie's Overnight Easy Breakfast Casserole
Prep Time
20 mins
Cook Time
45 mins
Total Time
7 hrs 5 mins

This easy breakfast casserole is the best I've ever tasted. Loaded with sausage, bacon, peppers, onion and cheese it's got everything you could possibly want in an egg dish.

Course: Breakfast
Cuisine: American
Keyword: make ahead breakfast casserole, quick breakfast recipes
Servings: 8 servings
Calories: 432.7 kcal
Author: The Seasoned Mom
  • 1 cup Bisquick or other all-purpose baking mix
  • 6 eggs
  • 3 cups milk
  • ½ cup butter melted
  • 2 cups shredded cheddar cheese
  • 1 lb. mild bulk pork sausage cooked in a skillet and drained
  • ½ lb. bacon cooked and chopped
  • ½ cup green bell pepper chopped
  • ½ cup onion chopped
  1. Spray a 9 x 13-inch baking dish with cooking spray and set aside.
  2. In a large bowl, beat together Bisquick, eggs, and milk. Stir in remaining ingredients.
  3. Pour mixture into the prepared baking dish. Cover and refrigerate for at least 6 hours (or overnight).
  4. When ready to bake, place the baking dish on the counter to come to room temp while you preheat the oven to 350F/180C.

  5. Bake, uncovered, for 45 minutes – 1 hour.
Recipe Notes

Cooking for a Smaller Family? You can cut the ingredients in half and prepare the casserole in an 8-inch square baking dish. Alternatively, you can prepare the full recipe, but bake the ingredients in two separate 8-inch square casseroles. Eat one casserole now and save the other baked casserole in the freezer for later!

Have leftovers? The cooked casserole freezes really well!

Note: Recipe from my friend Sallie and adapted from Recipes and Remembrances cookbook from Etlan United Methodist Church. 

Nutrition Facts
Sallie's Overnight Easy Breakfast Casserole
Amount Per Serving (1 /10 of recipe)
Calories 432.7 Calories from Fat 288
% Daily Value*
Fat 32g49%
Saturated Fat 14.8g93%
Cholesterol 191mg64%
Sodium 774.5mg34%
Carbohydrates 14.7g5%
Fiber 0.6g3%
Sugar 5.2g6%
Protein 21.4g43%
* Percent Daily Values are based on a 2000 calorie diet.