Baked Ham and Gruyère Croissants with Maple Mustard
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Baked Ham and Gruyère Croissants with Maple Mustard – delicious ham and gruyere cheese baked with a maple mustard on a crisp baked croissant. Topped with some chives and dipped in more of the maple mustard, this is a delicious make-ahead brunch that everyone will love.
While I love a good breakfast dish – especially a breakfast casserole or bake, sometimes I want to bring a dish to a brunch that looks and tastes a little more elevated. For a brunch with some friends the other week, I decided to make these Baked Ham and Gruyère Croissants with Maple Mustard. I started with store-bought croissants (love the ones from Trader Joe’s or Costco), some thick sliced deli-ham, lots of shredded Gruyère, my favorite maple mustard dressing (from this salad), and lots of chopped fresh chives.
This couldn’t be simpler to throw together! All you need to do is:
- Whisk up the maple mustard dressing
- Preheat the oven
- Slice croissants and place in a baking dish
- Add ham and shredded Gruyère
- Slather the croissants with the maple mustard dressing
- Cover and bake
Baked Ham and Gruyère Croissants with Maple Mustard: Make-Ahead Friendly (Perfect for Brunch!)
One of my favorite things about this recipe is how well it works for entertaining. You can assemble everything ahead of time, cover the dish, and refrigerate until you’re ready to bake. When guests arrive, just pop it in the oven and let it do its thing.
No last-minute scrambling. No stress. Just flaky, cheesy perfection.
Why This recipe Works:
This recipe is all about contrast and balance:
- Buttery croissants create a crisp, golden exterior while staying soft inside
- Gruyère cheese melts beautifully and adds a nutty, savory depth
- Ham brings saltiness that balances the sweetness
- Maple mustard ties everything together with just the right sweet-tangy bite
Because the croissants are baked after being filled and brushed with the maple mustard, the flavors soak into every layer without making them soggy.
Serving Suggestions
These croissants are hearty enough to stand on their own, but they also pair well with:
- A simple green salad
- Fresh fruit or berries with yogurt or whipped cream
- A juice or sparkling drink
They’re equally perfect for a casual weekend brunch or a holiday gathering where you want something special but not fussy.
Baked Ham and Gruyère Croissants with Maple Mustard
Ingredients
Maple Mustard Dressing
- 4 tablespoons whole grain mustard
- 1/3 cup mayo
- 2 tablespoons sour cream (or plain yogurt)
- 2 tablespoons apple cider vinegar
- 1/2 teaspoon garlic powder
- 1/4 cup real maple syrup
Sandwich Ingredients
- butter croissants (1 croissant for every 2 people)
- sliced deli ham
- Gruyère cheese, grated (about 1 oz. for every sandwich you plan to make)
- fresh chives, chopped
Instructions
Maple Mustard Dressing
- Start by making the maple mustard. This can be done up to a day or two ahead of time, or just as you're assembling the sandwiches.
- Whisk the ingredients together and pour into an airtight container. Store in the fridge for up to a week.
Sandwich Assembly
- Preheat the oven to 375°F.
- Cut each croissant in half length-wise and width-wise.
- Arrange the bottom half of each croissant piece in a rimmed baking dish. Slather (generously – trust!) the maple mustard dressing onto each piece of croissant.
- Then layer each piece with ham and lots of shredded Gruyère.
- Sprinkle lots of the fresh chives on each piece, then cover with the top piece of the croissant.
- Cover the entire baking dish with aluminum foil and bake for 15 minutes covered.
- Remove foil and then bake for an additional 2-4 minutes until cheese is bubbling and tops of croissants are lightly golden.
- Serve with an additional garnish of chives, and a side of the maple mustard dressing, and dip in the dressing while eating, if desired.Enjoy!
- (These sandwiches can be kept in the fridge in an airtight container for 2-3 days. They make great leftovers.)
Make-Ahead Instructions
- To make this ahead, build the sandwiches and cover with foil (making sure the foil is sealed well so no air gets in – don't want the croissants to dry out).
- Place in the fridge overnight for up to 24 hours.
- When ready to bake, preheat oven to 350°F. Bake (covered) for 20-25 minutes until cheese is melted. Once melted, remove foil and bake uncovered for an additional 4-5 minutes until croissants are crispy and golden. Enjoy!
If you’re looking for a brunch recipe that feels elevated, crowd-pleasing, and deceptively easy, these Baked Ham and Gruyère Croissants with Maple Mustard deserve a spot on your table. Be sure to tag me @plumstreetcollective on Instagram if you make these!
