Ham Swiss Croissant Bake (Print version)

Buttery croissants layered with ham and Swiss cheese in a creamy custard bake.

# What you’ll need:

→ Bread & Dairy

01 - 4 large butter croissants (preferably day-old), cut into 2-inch pieces
02 - 2 cups shredded Swiss cheese
03 - 1.5 cups whole milk
04 - 0.5 cup heavy cream

→ Meats

05 - 8 oz cooked ham, diced

→ Vegetables & Aromatics

06 - 4 green onions, thinly sliced

→ Eggs & Seasoning

07 - 4 large eggs
08 - 0.5 tsp Dijon mustard
09 - 0.5 tsp freshly ground black pepper
10 - 0.25 tsp salt
11 - Pinch of ground nutmeg

→ Topping

12 - 2 tbsp grated Parmesan cheese (optional)

# Steps:

01 - Preheat oven to 350°F. Grease a 9x13-inch baking dish with butter or nonstick spray.
02 - Arrange half of the croissant pieces in the baking dish. Top with half of the ham, half of the Swiss cheese, and half of the green onions. Repeat layering with remaining croissants, ham, cheese, and onions.
03 - In a large bowl, whisk together eggs, milk, cream, Dijon mustard, salt, pepper, and nutmeg until fully combined.
04 - Pour egg mixture evenly over layered ingredients in baking dish, gently pressing down to ensure thorough soaking.
05 - Sprinkle Parmesan cheese over the top if desired.
06 - Bake uncovered for 30 to 35 minutes until the top turns golden and custard is set in the center.
07 - Allow bake to rest for 5 to 10 minutes before serving.

# Cooking tips:

01 -
  • Uses everyday ingredients with a gourmet twist—day-old croissants get a delicious second life
  • Perfect for feeding a crowd without spending hours in the kitchen
  • Combines the best of breakfast casserole and French bistro flavors
  • Make-ahead friendly—assemble the night before and bake when needed
  • Endlessly adaptable with your favorite cheeses, meats, and vegetables
02 -
  • Don't skip the nutmeg—just a pinch adds warmth and complexity to the custard
  • Press down on the croissants after pouring the egg mixture to ensure every piece is well-soaked
  • Let the bake rest for 5–10 minutes after removing from the oven so the custard sets properly
  • Double-check ingredient labels for allergens if using packaged products, especially for mustard and gluten sensitivities
  • This dish contains milk, eggs, wheat (gluten), and pork; substitute ingredients carefully if accommodating dietary restrictions
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