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Savory Cheesy Ham and Gruyere Croissant Breakfast Bake

savory cheesy ham and gruyere croissant breakfast bake - featured image

A quick and easy savory breakfast bake combining flaky croissants, smoky ham, and nutty Gruyere cheese soaked in a rich custard. Perfect for brunch or holiday mornings, this comforting dish is both elegant and cozy.

Ingredients

Scale
  • 6 large buttery croissants, preferably day-old or slightly stale
  • 1 ½ cups diced cooked ham (smoked or honey-glazed)
  • 1 ½ cups shredded Gruyere cheese
  • 6 large eggs, room temperature
  • 2 cups whole milk or half-and-half
  • 1 tablespoon Dijon mustard
  • 1 teaspoon garlic powder
  • Salt and freshly cracked black pepper, to taste
  • 1 tablespoon fresh thyme, chopped (optional)
  • 1 tablespoon butter, melted (for greasing the baking dish)

Instructions

  1. Preheat your oven to 350°F (175°C). Lightly grease an 8×8-inch baking dish with melted butter.
  2. Tear the croissants into bite-sized chunks and spread evenly in the baking dish.
  3. Sprinkle the diced ham evenly over the croissant pieces, then top with shredded Gruyere cheese.
  4. In a medium bowl, whisk together the eggs, milk (or half-and-half), Dijon mustard, garlic powder, salt, and pepper until smooth.
  5. Pour the custard evenly over the croissant, ham, and cheese layers. Gently press down to help the croissants absorb the liquid without leaving puddles on top.
  6. Sprinkle fresh thyme over the top, if using.
  7. Let the bake rest at room temperature for 10-15 minutes to allow the croissants to soak up the custard.
  8. Bake uncovered for 35-40 minutes, or until the top is golden brown and the custard is set but slightly jiggly in the center. Tent with foil if the top browns too quickly.
  9. Remove from the oven and let cool for 5-10 minutes before slicing and serving.

Notes

Use day-old croissants for best texture; fresh croissants can be lightly toasted before use. Let the bake rest before baking to allow croissants to soak custard fully. Tent with foil if top browns too quickly. Can be assembled the night before and baked fresh in the morning with extra baking time. Freeze portions individually wrapped in foil for longer storage.

Nutrition

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