It all started one frantic Saturday morning. The alarm had inexplicably failed, my coffee pot decided to stage a protest, and I had brunch guests arriving in an hour. Panic was definitely setting in.
I needed something impressive, utterly delicious, and, most importantly, unbelievably easy. My gaze fell upon a forgotten bag of slightly stale croissants and some leftover sliced turkey ham. Inspiration struck!
What if I combined the flaky goodness of croissants with the classic savory duo of ham and cheese into one glorious, effortless dish? That day, the Ham and Cheese Croissant Breakfast Casserole was born in my kitchen, saving my brunch and cementing its place as a family favorite.
This dish isn’t just a recipe; it’s a revelation for busy mornings, a comforting embrace for chilly days, and a show-stopping centerpiece for any brunch spread. Preparing this Ham and Cheese Croissant Breakfast Casserole is an absolute joy, transforming simple ingredients into a luxurious, crowd-pleasing meal.
Why You’ll Love This Recipe
You are going to utterly adore this Ham and Cheese Croissant Breakfast Casserole for so many reasons. First, it’s ridiculously easy to assemble, making it perfect for both novice cooks and seasoned pros. Second, the flavor profile is simply irresistible: fluffy, savory croissants soak up a rich egg custard, studded with salty turkey ham and melty cheese.
This Ham and Cheese Croissant Breakfast Casserole delivers comfort in every bite. Third, it’s a fantastic make-ahead option. You can prepare it the night before and just pop it into the oven in the morning, freeing up your precious time.
Imagine waking up to the aroma of a freshly baked Ham and Cheese Croissant Breakfast Casserole without all the morning rush! Furthermore, this savory croissant bake is incredibly versatile. You can easily adapt it to suit different tastes or whatever ingredients you have on hand.
It serves beautifully for a relaxed weekend breakfast, a festive holiday brunch, or even a delightful “brinner” (breakfast for dinner). This recipe for Ham and Cheese Croissant Breakfast Casserole truly hits all the right notes for convenience, flavor, and sheer deliciousness.
Ingredients You’ll Need
Gathering your ingredients for this spectacular Ham and Cheese Croissant Breakfast Casserole is straightforward. Here is everything you need for this delightful breakfast casserole:
* 8 large croissants (preferably day-old), torn into 1-2 inch pieces
* 2 tablespoons unsalted butter, melted, plus extra for greasing
* 12 ounces sliced deli turkey ham, diced or roughly chopped
* 2 cups shredded Gruyère cheese (or a mix of Gruyère and sharp cheddar)
* 10 large eggs
* 2 cups whole milk
* 1 teaspoon Dijon mustard
* 1/2 teaspoon salt
* 1/4 teaspoon black pepper
* 2 tablespoons fresh chives, chopped (for garnish, optional)
Substitutions & Variations
One of my favorite things about this Ham and Cheese Croissant Breakfast Casserole is its incredible adaptability! You can really make this recipe your own.
* Croissants: While croissants provide that unparalleled flaky texture, you can absolutely substitute them. Try brioche bread, challah, or even regular day-old artisan bread torn into cubes. Each will give your savory breakfast casserole a slightly different, but equally delicious, character.
* Ham: Not a fan of turkey ham, or want to try something different? Cooked chicken sausage, smoked turkey breast, beef bacon, or even sautéed mushrooms work wonderfully. For a vegetarian option, simply omit the ham and load up on veggies!
* Cheese: Gruyère offers a sophisticated, nutty flavor, but feel free to experiment. Sharp cheddar, Swiss, Monterey Jack, or even a spicy pepper jack can elevate your Ham and Cheese Croissant Breakfast Casserole to new heights. A combination of cheeses often yields the best results.
* Vegetables: Sneak in some greens! Sautéed spinach, diced bell peppers, caramelized onions, or even roasted asparagus spears would be fantastic additions. Just make sure to pre-cook any high-moisture vegetables to prevent a watery casserole.
* Herbs & Spices: Fresh parsley, thyme, or a pinch of nutmeg can deepen the flavor profile of the egg custard. A dash of smoked paprika could add a lovely smoky note to your Ham and Cheese Croissant Breakfast Casserole.
* Sweet Twist: For a sweet croissant bake, omit the ham and Dijon.
Use a sweeter bread like brioche. Add a touch of vanilla extract to the egg mixture, a sprinkle of cinnamon, and fresh berries. Top with a streusel or a drizzle of maple syrup after baking. This transforms the concept of a Ham and Cheese Croissant Breakfast Casserole into a delightful dessert-like dish.
Step-by-Step Instructions
Creating this delightful Ham and Cheese Croissant Breakfast Casserole is a breeze. Follow these simple steps for a perfect result every time.
1. Prepare Your Baking Dish: First, preheat your oven to 350°F (175°C). Lightly grease a 9×13-inch baking dish with butter.
This prevents sticking and ensures easy cleanup.
2. Assemble Croissants and Ham: Tear the day-old croissants into rustic 1 to 2-inch pieces.
Scatter half of the torn croissant pieces evenly across the bottom of the prepared baking dish. Next, distribute half of the diced turkey ham over the croissants. Sprinkle half of your shredded cheese over the ham layer.
Repeat this layering process with the remaining croissants, turkey ham, and cheese. This ensures every bite of your Ham and Cheese Croissant Breakfast Casserole gets a good mix of flavors.
3. Whisk the Egg Custard: In a large bowl, whisk together the eggs, whole milk, Dijon mustard, salt, and black pepper until thoroughly combined and slightly frothy. The Dijon adds a subtle tang that truly complements the richness of the ham and cheese in this croissant breakfast bake.
4. Pour and Soak: Carefully and evenly pour the egg mixture over the layers in the baking dish. Gently press down on the croissant pieces with the back of a spoon to ensure they absorb the custard well. You want all those flaky layers to become beautifully saturated for your Ham and Cheese Croissant Breakfast Casserole.
5. Let it Rest (Optional but Recommended): For the best results, cover the dish and refrigerate for at least 30 minutes, or preferably overnight. This allows the croissants ample time to soak up all the delicious egg custard, leading to a more uniform and tender Ham and Cheese Croissant Breakfast Casserole.
If baking immediately, let it sit on the counter for 15 minutes while the oven heats up.
6. Bake the Casserole: Place the uncovered baking dish into the preheated oven.
Bake for 45-55 minutes, or until the casserole is puffed, golden brown, and set in the center. A knife inserted into the center should come out clean. If the top starts browning too quickly, loosely tent it with aluminum foil.
7. Cool and Serve: Once baked, remove the Ham and Cheese Croissant Breakfast Casserole from the oven. Let it rest for 10-15 minutes before serving.
This allows the casserole to set properly, making it easier to slice and serve. Garnish with fresh chopped chives if desired, then slice and enjoy your magnificent Ham and Cheese Croissant Breakfast Casserole!
Pro Tips for Success
Making a truly exceptional Ham and Cheese Croissant Breakfast Casserole involves a few clever tricks. These tips will help you achieve perfection every time.
* Day-Old Croissants are Key: Seriously, don’t skip this! Stale or day-old croissants are slightly drier and absorb the egg custard much better than fresh, super-soft ones. This prevents your casserole from becoming soggy and ensures a beautiful texture.
If you only have fresh croissants, you can lightly toast them in the oven for 5-10 minutes to dry them out slightly.
* Don’t Overcrowd the Dish: While tempting to pack in extra croissants, give them some space. An overcrowded dish won’t cook evenly, and the croissants might not absorb the custard properly.
* Even Distribution of Ingredients: Take a moment to evenly distribute the ham and cheese between the layers. This ensures every forkful of your Ham and Cheese Croissant Breakfast Casserole contains a balanced mix of flavors and textures.
* The Power of the Soak: Allowing the casserole to soak, even for just 30 minutes, makes a huge difference in the final texture.
An overnight soak creates an even more custardy, melt-in-your-mouth result. Plan ahead for this fantastic Ham and Cheese Croissant Breakfast Casserole.
* Cover if Browning Too Fast: Keep an eye on the casserole as it bakes.
If the top browns too quickly before the center sets, loosely tent it with aluminum foil. This protects the top while allowing the rest of the casserole to cook through.
* Rest Before Serving: Just like a good steak, your Ham and Cheese Croissant Breakfast Casserole benefits from a short rest after baking.
This allows the egg custard to firm up and prevents it from falling apart when you slice into it.
* High-Quality Ingredients: The simplicity of this dish means the quality of your ingredients really shines. Use good quality turkey ham, flavorful cheese, and fresh eggs for the best tasting Ham and Cheese Croissant Breakfast Casserole.

Storage & Reheating Tips
This Ham and Cheese Croissant Breakfast Casserole makes fantastic leftovers, which is perfect for meal prepping!
* Refrigeration: Store any leftover Ham and Cheese Croissant Breakfast Casserole in an airtight container in the refrigerator for up to 3-4 days.
* Freezing: For longer storage, slice the cooled casserole into individual portions. Wrap each portion tightly in plastic wrap, then again in aluminum foil.
Place the wrapped portions in a freezer-safe bag or container. It will keep in the freezer for up to 2-3 months. Thaw frozen portions in the refrigerator overnight before reheating.
* Reheating (Oven): For the best results, reheat individual slices or the entire casserole in a preheated oven at 300°F (150°C) until warmed through, about 15-20 minutes for slices, or 25-30 minutes for a larger portion. Covering it loosely with foil can prevent it from drying out.
* Reheating (Microwave): For a quick reheat, individual slices of Ham and Cheese Croissant Breakfast Casserole can be microwaved on a microwave-safe plate for 1-2 minutes, or until hot. Be mindful that the texture might be slightly softer than oven reheating.
What to Serve With This Recipe
The Ham and Cheese Croissant Breakfast Casserole is quite a complete meal on its own, but pairing it with a few simple sides can elevate your brunch spread.
* Fresh Fruit Salad: A vibrant bowl of mixed berries, sliced melon, grapes, and oranges offers a refreshing contrast to the richness of the casserole.
* Green Salad: A light, peppery arugula salad with a bright vinaigrette provides a nice balance and cuts through the richness of the savory croissant bake.
* Roasted Vegetables: For a heartier meal, consider serving roasted asparagus, cherry tomatoes, or a medley of seasonal vegetables.
* Beverages: Classic pairings include freshly brewed coffee, orange juice, or a mimosa for a celebratory touch.
* Condiments: A dollop of hot sauce or a sprinkle of fresh cracked black pepper can add an extra kick if desired.
FAQs
Can I make this Ham and Cheese Croissant Breakfast Casserole the night before?
Absolutely! In fact, preparing this Ham and Cheese Croissant Breakfast Casserole the night before is highly recommended. An overnight soak allows the croissants to thoroughly absorb the egg custard, resulting in a more tender and flavorful casserole. Just cover it tightly and refrigerate, then bake in the morning.
What kind of croissants work best for this recipe?
Day-old, slightly stale croissants are ideal for this Ham and Cheese Croissant Breakfast Casserole. They are drier and will soak up the egg mixture much better without becoming overly soggy. If you only have fresh croissants, you can lightly toast them in the oven for about 5-10 minutes to dry them out a bit before tearing them.
Can I use other meats instead of turkey ham?
Yes, definitely! You can easily customize this Ham and Cheese Croissant Breakfast Casserole. Cooked chicken sausage, smoked turkey breast, or even sautéed beef bacon would be delicious alternatives. For a vegetarian option, simply omit the meat entirely and add more vegetables like spinach or mushrooms.
How long does the Ham and Cheese Croissant Breakfast Casserole last in the refrigerator?
Properly stored in an airtight container, leftover Ham and Cheese Croissant Breakfast Casserole remains delicious for up to 3-4 days in the refrigerator. It reheats beautifully, making it perfect for quick breakfasts throughout the week.
Is this Ham and Cheese Croissant Breakfast Casserole good for meal prep?
Yes, it’s excellent for meal prep! You can bake the entire Ham and Cheese Croissant Breakfast Casserole, let it cool, then slice it into individual portions. Store them in airtight containers in the fridge for easy grab-and-go breakfasts or lunches during your busy week.
Nutrition Information (per serving)
Please note that these values are estimates and can vary based on specific ingredients and portion sizes. This Ham and Cheese Croissant Breakfast Casserole is a substantial meal!
| Calories | 450 kcal |
| Protein | 25g |
| Fat | 30g |
| Saturated Fat | 15g |
| Carbohydrates | 25g |
| Fiber | 1g |
| Sugar | 4g |
| Sodium | 800mg |

Ham and Cheese Croissant Breakfast Casserole
- Total Time: 85 mins
- Yield: 8 servings 1x
- Diet: Gluten Free option available
Description
A delicious and easy-to-make breakfast casserole made with flaky croissants, turkey ham, and cheese, perfect for brunch or meal prep.
Ingredients
8 large Croissants, torn into 1–2 inch pieces
2 tablespoons Unsalted Butter, melted, plus extra for greasing
12 ounces Sliced Deli Turkey Ham, diced or roughly chopped
2 cups Shredded Gruyère Cheese
10 large Eggs
2 cups Whole Milk
1 teaspoon Dijon Mustard
1/2 teaspoon Salt
1/4 teaspoon Black Pepper
2 tablespoons Fresh Chives, chopped (for garnish, optional)
Instructions
- Preheat your oven to 350°F (175°C) and grease a 9×13-inch baking dish with butter
- Tear the croissants into pieces and layer half in the greased baking dish, followed by half the ham and half the cheese. Repeat the layers
- In a large bowl, whisk together eggs, milk, Dijon mustard, salt, and black pepper until well combined
- Pour the egg mixture evenly over the layered croissants and gently press down to soak
- Refrigerate for at least 30 minutes or up to overnight
- Bake uncovered for 45-55 minutes until puffed and golden brown. A knife inserted should come out clea
- Let rest for 10-15 minutes before slicing. Garnish with chives, slice, and serve
Notes
Using day-old croissants improves texture by preventing sogginess. If fresh, lightly toast them first.
- Prep Time: 30 mins
- Cook Time: 55 mins
- Category: Breakfast
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 slice
- Calories: 450 kcal
- Sugar: 4g
- Sodium: 800mg
- Fat: 30g
- Saturated Fat: 15g
- Unsaturated Fat: N/A
- Trans Fat: N/A
- Carbohydrates: 25g
- Fiber: 1g
- Protein: 25g
- Cholesterol: N/A
Start your morning off right by exploring why this dish is a favorite for so many. It’s not just about flavor; it’s about ease, making it perfect for hectic mornings. Learn more about the ease of preparation with our guide to hassle-free breakfasts.
The Ham and Cheese Croissant Breakfast Casserole is a delightful twist on traditional breakfast staples, combining flaky croissants with savory ham and cheese for a unique dish. Find out more about this delicious fusion of flavors in the article on Casseroles.
