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Easy Cheesy Croissant Breakfast Casserole with Ham and Cheese

easy cheesy croissant breakfast casserole - featured image

A quick and easy breakfast casserole featuring buttery croissants, savory ham, and melted cheese soaked in a rich egg custard. Perfect for lazy weekend mornings or holiday brunches.

Ingredients

Scale
  • 4 large croissants, torn into bite-sized pieces
  • 8 ounces ham, diced
  • 2 cups shredded cheddar cheese
  • 1 cup shredded mozzarella cheese
  • 6 large eggs, room temperature
  • 2 cups whole milk
  • 1 teaspoon Dijon mustard
  • 1/2 teaspoon salt
  • 1/4 teaspoon black pepper
  • Optional: 1/2 teaspoon garlic powder
  • Fresh herbs like chopped chives or parsley, for garnish

Instructions

  1. Preheat your oven to 350°F (175°C). Lightly grease your 9×13 inch baking dish with butter or non-stick spray.
  2. Tear the croissants into bite-sized pieces (about 2-inch chunks) and spread evenly in the baking dish.
  3. Scatter the diced ham evenly over the croissant pieces.
  4. Sprinkle the shredded cheddar and mozzarella cheeses evenly over the ham and croissants.
  5. In a large bowl, whisk together the eggs, milk, Dijon mustard, salt, pepper, and optional garlic powder until smooth and slightly frothy.
  6. Pour the egg mixture evenly over the croissant, ham, and cheese layers.
  7. Press down gently with a spatula to help the custard soak in evenly without mashing the croissants.
  8. Cover the baking dish with foil and let it sit at room temperature for about 10 minutes to allow the croissants to absorb the custard.
  9. Bake covered for 25 minutes, then remove the foil and bake uncovered for an additional 15-20 minutes until golden brown and puffed. A knife inserted in the center should come out clean.
  10. Remove from oven and let rest for 5 minutes before serving.

Notes

Letting the croissants soak in the custard for 10 minutes before baking ensures a moist and tender casserole. Use room temperature eggs and milk for even cooking. Cover with foil while baking to keep moist, then uncover to brown the top. If browning too quickly, tent foil over the top.

Nutrition

Keywords: croissant casserole, breakfast casserole, ham and cheese, cheesy breakfast, easy brunch recipe, savory breakfast, croissant breakfast bake