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Turkey and Swiss Croissant Breakfast Bake

Turkey and Swiss Croissant Breakfast Bake

This Turkey and Swiss Croissant Bake is a rich, buttery breakfast casserole that’s perfect for brunch, holidays, or meal prep. Flaky croissants are layered with savory turkey, melty Swiss cheese, and a creamy egg custard that bakes into a golden, comforting dish. It’s easy to prep in minutes and tastes like something from a café.
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Prep Time 10 minutes
Cook Time 35 minutes
Servings 4

Ingredients
  

  • 6 large croissants slightly stale works best, chopped into thirds
  • 6 large eggs 6-8 depending on the size
  • ½ cup milk or heavy cream
  • 1 tsp garlic powder
  • 1 tsp onion powder
  • 1 tsp dried rosemary
  • 1 tsp salt
  • ½ tsp black pepper
  • 6 oz smoked turkey slices
  • 1 ½ cups Swiss cheese shredded (or you can used slices)
  • Butter for greasing baking dish
  • 1 tsp Dijon mustard optional but recommended for flavor
  • Fresh parsley for garnish (optional)

Instructions
 

Prep the croissants

  • Cut the croissants into thirds or large chunks. Slightly stale croissants work best because they absorb the egg mixture without getting too soggy.
    If your croissants are frozen, let them thaw first.

Make the egg mixture

  • In a large bowl whisk together:
    Eggs, milk or heavy cream, garlic & onion powder, rosemary, salt, pepper, (mustard if using) Whisk until fully combined.

Dip the croissants

  • Dip each croissant piece into the egg mixture, coating it lightly. Shake off any excess so they don’t become overly soaked.

Layer the casserole

  • Butter a baking dish and arrange the croissant pieces in the bottom.
    Try to place some of the cut sides facing upward — this helps create a beautiful golden top when baked.

Add the turkey

  • Fold slices of smoked turkey and tuck them in between the croissant pieces so they’re evenly distributed throughout the dish.
    This layering technique makes the finished bake look pretty and ensures every bite has turkey.

Add the cheese

  • Place Swiss cheese throughout the casserole:
    between croissant slices
    inside the folded turkey pieces
    across the top
    This helps the cheese melt evenly into every layer.

Pour the remaining egg mixture

  • Pour any remaining egg mixture evenly over the casserole.

Bake

  • Bake at 350°F for 30–35 minutes, or until:
    the eggs are fully set
    the top is golden
    the croissants are slightly crispy

Slice and serve

  • Let the casserole rest for about 5 minutes, then slice and serve.