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+ servings
A slice of egg sandwich breakfast casserole on a spatula and a white baking dish
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4 from 5 votes

Family Favorite Egg Sandwich Breakfast Casserole

A basic egg sandwich gets an EGG-stra special upgrade when it's turned into The Ultimate Egg Sandwich Breakfast Casserole.
Prep Time10 mins
Cook Time1 hr
Total Time1 hr 10 mins
Course: Breakfast and Brunch, Breakfast casserole
Cuisine: American
Servings: 8 servings
Calories: 529kcal


  • 8 slices White bread toasted
  • 12 eggs four for frying, and 8 for whisking
  • 2 tablespoons butter
  • salt and pepper
  • 16 slices American cheese
  • 4-6 slices bacon cooked and crumbled
  • cup milk
  • ½ teaspoon salt
  • ¼ teaspoon pepper
  • 1 tablespoon Dijon mustard
  • 2 cups shredded cheddar cheese
  • 1 cup chopped green onions

Tools and equipment

  • 9 x 13 baking dish
  • large skillet for frying eggs
  • spatula for flipping eggs
  • whisk
  • large bowl for whisking egg mixture
  • cutting board and chefs knife for chopping green onions
  • box grater if using block cheese
  • olive oil cooking spray


  • Preheat oven to 350 degrees.
  • Spray the bottom and sides of the casserole dish with the cooking spray.
  • Lay four slices of the toasted bread in the bottom of the prepared casserole dish.
  • Top each slice of bread with two slices of American cheese.
  • Fry four eggs in the large skillet with the butter to over hard consistency.
  • Season each egg with salt and pepper to taste.
  • Place one egg on top of each toast and cheese slice in the casserole dish.
  • Top each egg sandwich with an additional two slices of American cheese, each sandwich.
  • Top each sandwich with a portion of the crumbled bacon.
  • Top each sandwich with the remaining toast slices.
  • In a large bowl, whisk together the remaining eggs, milk, salt, pepper and Dijon mustard until well combined.
  • Carefully pour the egg mixture evenly over the egg sandwiches in the casserole dish.
  • Bake in a preheated oven for 60 minutes or until the center of the casserole is set and no longer runny.
  • Remove the casserole from the oven and top evenly with the shredded cheddar cheese.
  • Return the casserole to the oven just long enough for the cheese to melt.
  • Remove the casserole from the oven and top with the chopped scallions.
  • Allow the casserole to sit for 15 minutes.
  • Slice, serve and enjoy!


Serving: 1serving | Calories: 529kcal | Carbohydrates: 18g | Protein: 28g | Fat: 38g | Saturated Fat: 20g | Cholesterol: 336mg | Sodium: 1381mg | Potassium: 321mg | Fiber: 1g | Sugar: 5g | Vitamin A: 1295IU | Vitamin C: 2.3mg | Calcium: 807mg | Iron: 2.8mg