Overnight Croissant Ham and Cheese Breakfast Casserole is a great recipe to make for holiday mornings since you can do prep the night before.
At my house, we always make a breakfast casserole on holiday mornings. There is nothing better than a big dish of breakfast that can feed a lot of hungry people, and it’s even better if you can do all of the preparation the night before and just pop it in the oven in the morning. I usually make my grandma billie’s cinnamon rolls and a big bowl of fruit salad to go with it.
Ingredients Needed:
- croissants
- shredded Swiss cheese
- diced ham
- sweet onion
- eggs
- whole milk
- sour cream
- Dijon mustard
- salt and freshly ground black pepper
- shredded cheddar cheese
- green onions
How to make Overnight Croissant Ham and Cheese Breakfast Casserole:
The complete, printable recipe is at the end of this post.
- Spray a 9×13-inch pan with nonstick spray.
- Cut the croissants into 1-inch cubes, and spread in the bottom of the pan. Sprinkle the croissant cubes with cheese, ham and onion.
- In a large bowl, whisk together the eggs, milk, sour cream, Dijon, salt and pepper until well-blended. Pour the mixture on top of the ingredients in the pan. Cover with foil, and refrigerate overnight.
- The next morning, set the dish on the counter for 30 minutes. Preheat the oven to 350 degrees F. Uncover the dish, and bake for 45 minutes. Then sprinkle the cheddar cheese on top and bake for 5 more minutes or so… just until the cheese is melted and the casserole tests done with a knife inserted into the center coming out clean.
- Serve slices with a sprinkle of green onions.
Recipe Tips:
You can always substitute French bread cubes for the croissants if you’d like.
Substitute cooked sausage or bacon for the ham, or leave out the meat completely if you have non-meat eaters in your family.
❤️ What I Love About This Recipe:
- You can prepare it the night before!
- It’s the perfect breakfast to serve on a holiday morning.
- The croissants are a nice substitute for traditional bread.
Here are a few more breakfast casserole recipes you might like to try:
Overnight Croissant Ham and Cheese Breakfast Casserole
Ingredients
- 4 large croissants (6+ cups chopped)
- ¾ cup shredded Swiss cheese
- 1½ cups diced ham
- ⅓ cup finely chopped sweet onion
- 9 large eggs
- 1 cup whole milk
- ¾ cup sour cream
- 2 tablespoons Dijon mustard
- ¼ teaspoon salt
- ¼ teaspoon freshly ground black pepper
- ½ cup shredded cheddar cheese
- ¼ cup chopped green onions
Instructions
- Spray a 9×13-inch pan with nonstick spray.
- Cut the croissants into 1-inch cubes, and spread in the bottom of the pan. Sprinkle the croissant cubes with cheese, ham and onion.
- In a large bowl, whisk together the eggs, milk, sour cream, Dijon, salt and pepper until well-blended. Pour the mixture on top of the ingredients in the pan. Cover with foil, and refrigerate overnight.
- The next morning, set the dish on the counter for 30 minutes. Preheat the oven to 350 degrees F. Uncover the dish, and bake for 45 minutes. Then sprinkle the cheddar cheese on top and bake for 5 more minutes or so… just until the cheese is melted and the casserole tests done with a knife inserted into the center coming out clean.
- Serve slices with a sprinkle of green onions.
Nutrition
Nutrition information is automatically calculated, so should only be used as an approximation.
