Name: Ham & Cheese Croissant Casserole Recipe
Prep time: 15 min
Cook time: 40 min
Total time: 55 min
Cuisine: American
Ingredients: 6 large croissants, torn into pieces; 1 ½ cups diced ham; 2 cups shredded Swiss or cheddar cheese; 6 large eggs; 2 cups milk or half-and-half; 1 tsp Dijon mustard (optional); ½ tsp garlic powder; Salt and pepper, to taste; Chopped chives or parsley (for garnish)

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If you love the idea of buttery, flaky croissants teamed up with savory ham and melted cheese, wait until you try this Ham & Cheese Croissant Casserole Recipe. It’s comfort food elevated with that perfect balance of gooey, rich flavors and a custardy texture that comes from soaking the croissants in an egg mixture overnight. Whether you’re hosting brunch, celebrating a holiday, or just craving a cozy breakfast, this casserole will quickly become a family favorite you want to make again and again.

Ingredients You’ll Need

The image shows a wooden tray filled with golden brown croissants that have a crispy, flaky texture in the center top. To the left, there is a clear glass measuring cup filled with white cream on a white marbled surface. Below the measuring cup, there is a small white bowl with a dollop of pale yellow mustard. Next to it, there is a small clear bowl with shredded white cheese. In the middle, there are seven whole eggs in various shades of brown, beige, and white arranged in a loose cluster. To the right of the eggs, there is a clear bowl with small pieces of pink ham. At the bottom right, there is a small white bowl containing salt, pepper, and garlic powder. A dark blue cloth is partially visible in the top left corner. photo taken with an iphone --ar 4:5 --v 7

Every ingredient in this Ham & Cheese Croissant Casserole Recipe plays a crucial role, combining simplicity with flavor-packed results. From the flaky croissants to the sharp, melted cheese, each component is essential to the dish’s delightful texture and savory richness.

6 large croissants, torn into pieces: The star base of the casserole, providing buttery layers that soak up the custard beautifully.
1 ½ cups diced ham: Adds a salty, meaty bite that compliments the cheese perfectly.
2 cups shredded Swiss or cheddar cheese: Melts into a creamy, gooey layer that ties all flavors together.
6 large eggs: The binding agent creating the rich custard that bakes the casserole into a perfect softness.
2 cups milk or half-and-half: Adds creaminess and helps to soak the croissant pieces evenly.
1 tsp Dijon mustard (optional): Gives a subtle tang that brightens the savory profile without overpowering.
½ tsp garlic powder: Enhances depth of flavor with a gentle garlic kick.
Salt and pepper, to taste: Essential seasonings that elevate all other ingredients.
Chopped chives or parsley (for garnish): Adds fresh color and a light oniony flair on top.

How to Make Ham & Cheese Croissant Casserole Recipe

Step 1: Prepare Your Baking Dish and Layer Croissants

Start by greasing a 9×13-inch baking dish to prevent sticking, then evenly spread the torn croissant pieces across the bottom. This layering step is important because the croissants will soak up the egg custard, creating that signature soft yet slightly crisp texture.

Step 2: Add Ham and Cheese

Sprinkle the diced ham evenly over the croissants, followed by the shredded Swiss or cheddar cheese. This layering ensures every bite has that perfect combination of savory meat and melted cheese.

Step 3: Mix the Egg Custard

In a large bowl, whisk together the eggs, milk or half-and-half, Dijon mustard, garlic powder, salt, and pepper until smooth. This custard will soak into the croissants, binding the casserole and adding richness.

Step 4: Pour Custard and Press Gently

Pour the egg mixture evenly over the croissant, ham, and cheese layers. Gently press down with a spatula to help the croissants absorb the custard. This soaking step is what truly makes the Ham & Cheese Croissant Casserole Recipe so tender and flavorful.

Step 5: Refrigerate Before Baking

Cover the dish with plastic wrap and refrigerate for at least one hour or ideally overnight. This allows the custard to fully soak into the croissants, resulting in a luscious texture once baked.

Step 6: Bake to Perfection

Remove the casserole from the refrigerator and bake in a preheated 350°F (175°C) oven for 35 to 40 minutes until the top is golden brown and the custard is set. Let it cool slightly before serving, so it slices beautifully without falling apart.

How to Serve Ham & Cheese Croissant Casserole Recipe

The image shows a sandwich cut in half, placed on white parchment paper with a white marbled surface underneath. Each sandwich half has four visible layers: the top golden-brown crusty bun, a pesto green spread under the bun, several thin, folded slices of pale pink deli meat, fresh red tomato pieces, and bright green leafy lettuce at the bottom, all inside the bread. There are small blue toothpicks holding each sandwich half together. The background includes blurred printed paper with some text and images. Photo taken with an iphone --ar 4:5 --v 7

Garnishes

Freshly chopped chives or parsley add a vibrant pop of color and a mild oniony brightness that perfectly complements the rich casserole. You can even sprinkle a little extra shredded cheese on top right after baking for an irresistible melty finish.

Side Dishes

This casserole shines as the centerpiece, but pairing it with fresh fruit, a crisp green salad, or roasted vegetables creates a well-rounded meal. The sweetness of fruit balances the savory flavors, making each bite a delightful contrast.

Creative Ways to Present

For a crowd-pleasing brunch, consider baking the casserole in mini ramekins for individual servings or layering it into a casserole dish with alternating ham and cheese for a beautiful marbled effect. Serve with dollops of sour cream or a drizzle of hot sauce for those who love an extra kick.

Make Ahead and Storage

Storing Leftovers

Store any leftover Ham & Cheese Croissant Casserole in an airtight container in the fridge for up to 3 days. Reheat gently in the oven or microwave to enjoy warm and gooey again.

Freezing

This casserole freezes wonderfully, either before or after baking. Wrap it tightly with foil and plastic wrap, then freeze for up to 2 months. Thaw overnight in the fridge before reheating for best results.

Reheating

Reheat leftovers or thawed casserole in a 350°F oven for about 15-20 minutes until warmed through. Cover with foil to prevent the top from over-browning while maintaining that lovely custard texture inside.

FAQs

Can I use other types of bread instead of croissants?

While croissants are ideal for their flaky, buttery layers, you can substitute with brioche or soft white bread if needed. Just note the texture and richness will be slightly different.

Is it necessary to soak the casserole overnight?

Soaking overnight gives the croissants time to fully absorb the custard, making the casserole creamier and more flavorful. However, if short on time, an hour of soaking will still yield delicious results.

Can I use different kinds of cheese?

Absolutely! Swiss and cheddar are great choices, but feel free to try Gruyère, mozzarella, or even a spicy pepper jack for a twist on the classic flavors.

How many people does this recipe serve?

This Ham & Cheese Croissant Casserole Recipe typically serves 6 to 8 people, making it perfect for family breakfasts or brunch gatherings.

Can I add vegetables to this casserole?

Yes, adding sautéed mushrooms, spinach, or bell peppers works well. Just be mindful to sauté vegetables first to avoid excess moisture in the casserole.

Final Thoughts

This Ham & Cheese Croissant Casserole Recipe is pure comfort on a plate — flaky, cheesy, and satisfying in every bite. Its simplicity combined with the ability to make ahead makes it a go-to for any special breakfast or brunch occasion. Trust me, once you try it, you’ll want to keep this delicious casserole in your recipe rotation forever.