Easy Overnight Breakfast Casserole
A comforting and delicious breakfast casserole, perfect for family gatherings, combining eggs, cheese, meat, and sautéed vegetables for a crowd-pleasing dish.
Ingredients
Main Ingredients
- 12 large Eggs Feel free to use organic or free-range for added flavor and nutrients.
- 2 cups Milk Whole milk creates a rich, creamy texture. Substitute with almond or oat milk for a dairy-free option.
- 8 slices Bread Stale bread works wonderfully—think bagels, croissants, or sourdough.
- 2 cups Shredded Cheese Cheddar is classic, but Gruyère or Monterey Jack are also great options.
- 1 pound Bacon or Sausage Vegetarian sausage can be substituted for a meat-free version.
- 2 cups Spinach Fresh or frozen.
- 1 cup Bell Peppers, diced Mix and match colors for visual appeal.
- 1 Onion, diced Shallots or green onions can be used for a milder flavor.
- Salt and Pepper To taste. Fresh herbs like parsley or chives can elevate the flavors.
Instructions
Preparation
- Cut your bread into cubes and place it in a large mixing bowl. Toast slightly for added texture if desired.
- In a skillet, cook the bacon or sausage until crispy. Drain excess fat and let it cool slightly.
- In the same pan, sauté the diced onion and bell peppers until soft and fragrant. Add the spinach just until wilted.
- In another bowl, whisk together the eggs and milk until well combined, adding a pinch of salt and pepper.
Assembly
- Fold the meat and vegetable mixture into the bread cubes, then pour the egg mixture over everything, stirring gently to combine.
- Sprinkle half of the cheese into the mixture, reserving the other half for topping.
- Pour everything into a greased 9×13-inch baking dish. Cover with plastic wrap and let chill in the refrigerator overnight.
Baking
- Preheat your oven to 350°F (175°C). Uncover the casserole and top with the remaining cheese.
- Bake for 45-50 minutes until the top is golden brown and the center is set.
- Let it sit for 5-10 minutes before slicing into squares.
- Serve warm with a side of fresh fruit or a zesty breakfast cocktail.
Notes
Allowing the casserole to chill overnight helps the flavors meld beautifully. Test for doneness with a knife—it should come out clean when fully baked.