Ingredients
Base
- 4 large croissants, cut into bite-size pieces
- 1½ cups cooked ham, diced
Egg Mixture
- 6 large eggs
- 1 cup milk
- ½ teaspoon salt
- ½ teaspoon black pepper
- ½ teaspoon Dijon mustard (optional)
Cheese
- 1½ cups shredded Swiss cheese
- ½ cup shredded cheddar cheese
Other
- 1 tablespoon butter or cooking spray (for greasing the dish)
Instructions
- Preheat and grease: Preheat the oven to 375°F (190°C). Grease an 8×8-inch or similar baking dish with butter or cooking spray to prevent sticking.
- Arrange croissant pieces: Spread the croissant pieces evenly in the prepared baking dish, creating a base layer for the casserole.
- Add ham: Sprinkle the diced ham uniformly over the croissant pieces to distribute the savory meat evenly.
- Top with cheese: Evenly sprinkle the shredded Swiss and cheddar cheeses on top of the ham and croissants for a rich, melted cheese layer.
- Mix egg mixture: In a large bowl, whisk together the eggs, milk, salt, black pepper, and Dijon mustard (if using) until well combined and smooth.
- Pour over casserole: Pour the egg mixture evenly over the layered ingredients in the baking dish, ensuring everything is moistened.
- Bake: Bake uncovered in the preheated oven for 35–40 minutes, or until the center is set and the top is golden brown and bubbly.
- Rest and serve: Remove from the oven and let the casserole rest for 5 minutes to set before slicing and serving warm.
Notes
- Gruyère cheese can be substituted for Swiss for a richer, nuttier flavor.
- This bake works well with day-old croissants, which absorb the egg mixture better.
- Assemble the casserole the night before, cover it, and refrigerate until ready to bake for a convenient make-ahead meal.
- Leftovers can be stored in the refrigerator for up to 3 days and reheated before serving.
- Prep Time: 15 minutes
- Cook Time: 40 minutes
- Category: Breakfast
- Method: Baking
- Cuisine: American
