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Easy Overnight Bacon Cheddar Breakfast Casserole

overnight bacon cheddar breakfast casserole - featured image

A simple and delicious overnight breakfast casserole combining crispy bacon, sharp cheddar, eggs, and bread for a perfect, stress-free morning meal.

Ingredients

Scale
  • 8 slices bacon, cooked and chopped
  • 2 cups sharp cheddar cheese, shredded
  • 8 large eggs, room temperature
  • 2 cups whole milk or 2%
  • 6 cups day-old bread, cubed
  • 1 tablespoon Dijon mustard
  • 1 teaspoon salt
  • 1/2 teaspoon black pepper
  • 1/2 teaspoon garlic powder (optional)
  • 2 green onions, chopped

Instructions

  1. Cook the bacon in a skillet over medium heat until crisp, about 8 minutes. Drain on paper towels and chop into bite-sized pieces. Alternatively, bake bacon on a foil-lined sheet pan at 400°F for 15-20 minutes.
  2. Cube about 6 cups of day-old bread into roughly 1-inch pieces.
  3. In a large bowl, whisk together 8 large eggs, 2 cups whole milk, 1 tablespoon Dijon mustard, 1 teaspoon salt, 1/2 teaspoon black pepper, and 1/2 teaspoon garlic powder until fully combined and slightly frothy, about 2 minutes.
  4. In a 9×13-inch baking dish, layer the bread cubes evenly. Sprinkle chopped bacon and shredded cheddar cheese over the bread. Add chopped green onions on top.
  5. Slowly pour the egg mixture over the layered ingredients, pressing gently with a spatula to ensure all bread cubes are soaked. Let sit for 5-10 minutes to absorb.
  6. Cover the casserole with plastic wrap or foil and refrigerate for at least 8 hours or overnight.
  7. Preheat oven to 350°F. Remove the cover and bake casserole uncovered for 45-50 minutes until golden brown and set in the middle. A knife inserted should come out clean.
  8. Let casserole rest 5-10 minutes before slicing and serving.

Notes

If edges brown too fast during baking, tent with foil halfway through. Use fresh eggs for best texture. For gluten-free, substitute bread with gluten-free bread or cubed cooked potatoes. Vegetarian option: replace bacon with sautéed mushrooms or smoked tempeh. Leftovers keep up to 3 days refrigerated and reheat in oven or microwave.

Nutrition

Keywords: breakfast casserole, bacon cheddar casserole, overnight casserole, easy breakfast, make ahead breakfast