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Simple Overnight Breakfast Casserole Recipe

Simple Overnight Breakfast Casserole Recipe


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4.8 from 34 reviews

  • Total Time: 6 hours 60 minutes (including resting & chilling)
  • Yield: 6 1x

Description

Overnight Breakfast Casserole brings comfort and nutrition straight to your morning table. Packed with eggs, cheese, and your favorite breakfast ingredients, this simple dish makes busy mornings deliciously stress-free.


Ingredients

Scale

Main Ingredients:

  • 6 large eggs
  • 1012 slices of bread
  • 2 ½ cups chopped vegetables
  • 1 cup shredded cheese

Supporting Ingredients:

  • 1 cup milk

Seasonings:

  • 1 ½ teaspoons salt
  • ½ teaspoon garlic powder
  • ½ teaspoon onion powder
  • ¼ teaspoon black pepper

Instructions

  1. Grease a 9×13-inch baking dish thoroughly with cooking spray or butter. Your goal is complete surface coverage to prevent sticking.
  2. Tear 10-12 bread slices into 1-inch chunks. Spread bread pieces in an even single layer across the bottom of the prepared dish.
  3. Distribute 2 ½ cups chopped vegetables like spinach, peppers, and mushrooms evenly over bread layer. Ensure vegetables are spread uniformly for balanced flavor.
  4. Crack 6 large eggs into a large mixing bowl. Whisk eggs until completely blended and slightly frothy.
  5. Pour 1 cup milk into egg mixture. Add 1 ½ teaspoons salt, ½ teaspoon garlic powder, ½ teaspoon onion powder, and ¼ teaspoon black pepper. Whisk ingredients until fully combined.
  6. Fold 1 cup shredded cheese into egg mixture. Stir gently to distribute cheese throughout liquid.
  7. Slowly pour egg mixture over bread and vegetable layers. Use a spoon to gently press down, helping bread absorb liquid completely.
  8. Cover casserole dish tightly with plastic wrap or aluminum foil. Refrigerate for 6-8 hours or overnight to allow flavors to meld.
  9. Remove casserole from refrigerator 30 minutes before baking. Preheat oven to 350°F (175°C).
  10. Uncover casserole and bake for 45-50 minutes at 350°F. Your casserole is ready when top turns golden brown and center feels firm when touched.
  11. Remove from oven and let rest for 5-7 minutes. This helps casserole set and makes cutting easier.

Notes

  • Choose whole grain or gluten-free bread to customize the casserole for different dietary needs.
  • Prep ingredients the night before to save morning cooking time and ensure flavors meld together.
  • Press bread pieces gently into the egg mixture so they absorb liquid evenly and create a consistent texture.
  • Let the casserole rest for 5-10 minutes after baking to help it set and make slicing easier.
  • Prep Time: 15 minutes
  • Cook Time: 45 minutes
  • Category: Casseroles
  • Method: Baking
  • Cuisine: American

Nutrition

  • Serving Size: 6
  • Calories: 220 kcal
  • Sugar: 3 g
  • Sodium: 500 mg
  • Fat: 12 g
  • Saturated Fat: 5 g
  • Unsaturated Fat: 6 g
  • Trans Fat: 0.2 g
  • Carbohydrates: 18 g
  • Fiber: 3 g
  • Protein: 14 g
  • Cholesterol: 150 mg