This Ham and Cheese Croissant Casserole takes the deliciousness of a ham and cheese croissant to create this easy croissant breakfast casserole! Perfect for brunch, easy suppers, and holidays too!

When planning brunch for family and friends, I like to include this ham and cheese croissant casserole and other delicious breakfast favorites, like my easy blueberry muffins, French toast, and buttermilk pancakes. And for the holidays, we always include our cinnamon rolls in our gatherings!

When you want an easy and elegant breakfast casserole that is perfect for serving for breakfast throughout the holidays or for Sunday brunch, this tasty Ham and Cheese Croissant Casserole is it. It’s always such a crowd favorite! And when you are entertaining, it is a perfect make-ahead breakfast recipe!

Why You’ll Love This Recipe

Amazing flavor. The flavors of ham, cheese, and buttery croissants mingle with green onions and parmesan cheese for the ultimate breakfast casserole!

Easy recipe. The recipe is straightforward and easy. Mix all the ingredients, pour into a casserole dish, chill, and bake. Great for beginning and busy home cooks.

Make ahead easy. You’ll love that you make this breakfast casserole ahead, cover it, and chill it until ready to bake. Enjoy busy Thanksgiving, Christmas, and Easter mornings while this cheesy casserole bakes away in the oven!

How to Make Ham and Cheese Croissant Casserole

This casserole is incredibly easy to make and uses simple ingredients. Here’s how you’ll make it:

Croissant Casserole Ingredients

Be sure to see the recipe card below for the full listing of ingredients, instructions, notes, and estimated nutritional information.

• Ham – Use chopped cooked ham. This is great for using leftover baked ham! You can also use your favorite deli ham.
• Cheeses – Use Parmesan cheese and cheddar cheese in this casserole. If you prefer other cheese combinations, you can use those as well.
• Onions – I use sliced green onions for the added color and flavor. You can substitute with diced onion if needed. If you don’t like onions, omit them.
• Croissants – Cut large croissants into cubes. I use store-bought from the grocery store or a local bakery.
• Milk and heavy cream – I use whole milk and heavy cream. It adds richness and a creamy texture to the final dish.
• Eggs – Use large eggs.

Step-by-Step Instructions

It is so easy to toss all the ingredients together that you’ll have it whipped up and prepped for the refrigerator in no time.

Prep. Spray a 9×13 baking dish with nonstick cooking spray, or you can lightly coat it with butter.

Mix and chill. Combine the ham, Parmesan cheese, onions, and croissants in a medium mixing bowl. Arrange in prepared baking dish. Whisk together milk, cream, and eggs and pour over the croissant mixture. Cover and chill overnight.

Chilling the casserole lets the croissants absorb as much liquid as possible for a creamy and delicious breakfast casserole.

Bake and serve. Preheat oven to 350º F. Uncover the casserole and sprinkle with the Cheddar cheese. Bake until golden brown and cooked throughout, about 45 minutes. Remove from the oven and let stand for 5 minutes before serving.

What to Serve with Ham and Cheese Croissant Casserole

We love to serve this Ham and Cheese Croissant Casserole as a simple make-ahead breakfast or as a part of a larger breakfast buffet. Here are a few of our favorite things to serve with it.

• Honey Lime Fruit Salad
• Fresh Fruit or Easy Fruit Salad
• Ambrosia

Large Breakfast Buffet Options:

• Buttermilk Pancakes
• Waffles
• French Toast
• Buttermilk Biscuits
• Blueberry Muffins
• Sausage and Cheddar Quiche

Think of all those office brunches or showers where this casserole would be just perfect!

Make Ahead and Storage Tips

To make ahead. Prepare the recipe without baking, wrap it tightly with plastic wrap, and store it in the refrigerator for up to 3 days. Then, to bake, remove the plastic wrap and bake as directed.

To store. Once baked, allow it to cool, wrap it well with plastic wrap or foil, and store it in the refrigerator for up to 3 days. Reheat and serve.

To store leftovers. Allow leftovers to cool completely. Then, store in an airtight container in the refrigerator for up to 3 days. Reheat and serve.

I do not recommend freezing this breakfast casserole. Many times, cream and dairy-based recipes do not freeze well, as they can sometimes break when frozen.

Here’s my Ham and Cheese Croissant Casserole Recipe. I hope you love it!

Enjoy!
Robyn xo