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Easy Cheesy Croissant Breakfast Casserole Recipe for Cozy Mornings

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A comforting and easy-to-make breakfast casserole featuring buttery croissants soaked in a cheesy egg custard, perfect for cozy mornings, brunches, and family gatherings.

Ingredients

Scale
  • 6 large buttery croissants, torn into bite-sized pieces (day-old croissants work best for soaking)
  • 8 large eggs, room temperature
  • 2 cups whole milk (or 2% milk for a lighter version)
  • 1 teaspoon pure vanilla extract
  • Salt and freshly ground black pepper, to taste
  • 2 cups shredded sharp cheddar cheese
  • 1 cup shredded mozzarella cheese
  • 1/2 cup cooked breakfast sausage, crumbled (optional)
  • 1/2 cup diced bell peppers or sautéed mushrooms
  • Fresh chopped parsley or chives (optional, for topping)
  • A light dusting of paprika or smoked paprika (optional, for topping)

Instructions

  1. Preheat your oven to 350°F (175°C). Lightly grease a 9×13-inch baking dish with butter or non-stick spray.
  2. Tear the croissants into bite-sized pieces and spread them evenly in the baking dish. If croissants are fresh, let them sit out for 30 minutes to dry slightly.
  3. In a large bowl, whisk together the eggs, whole milk, vanilla extract, salt, and pepper until fully combined and slightly frothy.
  4. Stir in the shredded cheddar and mozzarella cheese, cooked sausage, and diced veggies if using. Fold gently to distribute ingredients evenly.
  5. Pour the custard mixture evenly over the torn croissants in the baking dish. Press the croissants down lightly with a spatula to help them absorb the liquid. Let rest for 10-15 minutes to soak.
  6. Bake uncovered for 35-40 minutes, or until the top is golden brown, cheese is bubbly, and a knife inserted in the center comes out clean. Tent with foil if top browns too fast.
  7. Remove from oven and let cool for 5 minutes before slicing. Sprinkle fresh parsley or chives and a pinch of paprika on top if desired.

Notes

[‘Let croissants soak in custard for 10-15 minutes for best texture.’, ‘Use day-old croissants for better soaking; fresh croissants can be dried out slightly before use.’, ‘Avoid pre-shredded cheese for better melting and texture.’, ‘If baking the casserole after refrigerating overnight, add 10 extra minutes to baking time.’, ‘Tent with foil if top browns too quickly during baking.’, ‘For vegetarian version, omit sausage and add extra veggies.’, ‘For dairy-free or vegan versions, substitute milk and cheese with plant-based alternatives and eggs with flax or chia eggs.’, ‘To freeze, assemble but do not bake. Wrap tightly and freeze up to 2 months. Thaw overnight and bake with added time.’]

Nutrition

Keywords: croissant casserole, breakfast casserole, cheesy breakfast, brunch recipe, easy breakfast, croissant recipe, cheesy casserole

Find it online: https://twinkletaste.com/easy-cheesy-croissant-breakfast-casserole-recipe-for-cozy-mornings/