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Overnight Croissant Breakfast Casserole

A warm, creamy casserole made with croissants, eggs, and cheese, perfect for brunch or special breakfasts.
Prep Time 10 minutes
Cook Time 35 minutes
Total Time 45 minutes
Course Breakfast, Brunch
Cuisine American
Servings 6 servings
Calories 320 kcal

Ingredients
  

Main Ingredients

  • 4 pieces croissants, torn into pieces Use fresh croissants for best texture.
  • 6 pieces eggs
  • 2 cups milk
  • 1 cup shredded cheese (e.g., cheddar or Swiss) Feel free to experiment with different cheeses.
  • 1/2 cup cooked ham, diced Can be replaced with sautéed mushrooms or bell peppers for a vegetarian option.
  • 1/4 cup green onions, chopped
  • Salt and pepper to taste
  • Optional: herbs (e.g., thyme or parsley) Fresh herbs add a nice touch.

Instructions
 

Preparation

  • In a large bowl, whisk together the eggs and milk. Stir in salt, pepper, and herbs if using.
  • In a greased baking dish, layer the torn croissants, diced ham, and shredded cheese.
  • Pour the egg mixture evenly over the croissant mixture, making sure it is well coated.
  • Sprinkle chopped green onions on top.
  • Cover the baking dish with plastic wrap and refrigerate overnight.

Cooking

  • Preheat the oven to 350°F (175°C) the next morning.
  • Remove the plastic wrap and bake for 30-35 minutes or until the casserole is set and golden brown.
  • Let it cool for a few minutes before serving.

Notes

This casserole is great on its own or with sides like fresh fruit or a light salad. For added flavor, consider drizzling with maple syrup or hot sauce. Store leftovers tightly covered in the fridge for up to three days, or freeze individual portions wrapped in plastic.
Keyword Breakfast Casserole, Croissant Casserole, Easy Breakfast, Make-Ahead Breakfast, Overnight Casserole