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Christmas Croissant Breakfast Casserole

Christmas Croissant Breakfast Casserole

Christmas Croissant Breakfast Casserole is a vegetarian croissant egg bake assembled in advance and baked the next day.
4.67 from 12 votes
Prep Time 15 mins
Cook Time 45 mins
Total Time 1 hr
Course Breakfast
Cuisine American
Servings 8
Calories 511 kcal


  • 1 red bell pepper
  • 1 large poblano pepper
  • 8 oz mushrooms, chopped
  • 2 Tbs unsalted butter
  • 3-4 large croissants, roughly chopped
  • ¼ cup green onion
  • 2 Tbs flat-leaf parsley
  • 1 cup shredded white cheddar cheese
  • ½ cup shredded Swiss cheese
  • ¼ cup shredded parmesan
  • 5 eggs, lightly beaten
  • 1 cup cream
  • 1 cup milk
  • 1 tsp kosher salt
  • couple pinches fresh cracked pepper


  • Under the oven broiler, roast the poblano and red bell peppers, turning every 4-5 minutes, until skins are blackened and blistered all over. Move the blackened peppers to a ziploc bag to allow to steam. Once cool enough to handle, remove and discard the skins and seeds. Chop and set aside.
  • In a medium skillet, melt the butter. Add the mushrooms and cook, tossing regularly, until nicely browned.
  • In a 13x9 baking dish, toss together the poblano pepper, red bell pepper, mushrooms, croissant pieces, green onion, and parsley. Top with the cheeses.
  • Combine the eggs, cream, milk, salt, and pepper. Pour over the casserole. Cover with plastic wrap and put in the fridge to set overnight.
  • Bake casserole at 350°F for 45 minutes or until center is set. Allow to cool 10 minutes before serving. Yields 8 servings.


Calories: 511kcal (26%) | Carbohydrates: 18g (6%) | Protein: 24g (48%) | Fat: 37g (57%) | Saturated Fat: 21g (131%) | Polyunsaturated Fat: 2g | Monounsaturated Fat: 8g | Cholesterol: 222mg (74%) | Sodium: 905mg (39%) | Potassium: 386mg (11%) | Fiber: 2g (8%) | Sugar: 7g (8%)

Calorie count is purely an estimate calculated using an online application to serve as a guide and not to be taken as accurate nutritional information. Percent Daily Values are based on a 2,000 calorie diet.

Keyword croissant breakfast casserole, croissant casserole, croissant egg bake, vegetarian breakfast casserole
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