This recipe is about a turkey and swiss croissant breakfast bake.

Turkey and Swiss Croissant Breakfast Bake

If you’re looking for an easy breakfast recipe that feeds a crowd, this Turkey and Swiss Croissant Bake is one of the simplest dishes you can make. It has buttery croissants, smoked turkey, melty Swiss cheese, and a savory egg custard baked until golden and crispy.

It’s perfect for holiday mornings, brunch gatherings, meal prep, or when you have overnight guests because you can assemble it quickly and bake it when you’re ready to serve.

One of my favorite tricks for this recipe is using croissants that are slightly stale. The croissants soak up the egg mixture without becoming soggy, which gives the casserole the perfect texture.

Even better, this recipe only takes about 10 minutes of active prep time, and the oven does the rest of the work.

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Why You’ll Love This Croissant Breakfast Bake

• Perfect for feeding a crowd
• Great way to use leftover or day-old croissants
• Easy 10 minute prep
• Buttery, cheesy, and comforting
• Perfect for brunch, holidays, or meal prep

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Ingredients

6-8 large croissants (slightly stale works best), chopped into thirds

6-8 large eggs

1/2 cup milk or heavy cream

1 tsp garlic & onion powder

1 tsp dried rosemary

1 tsp salt

½ tsp black pepper

6-8 oz smoked turkey slices

1 ½ cups Swiss cheese, sliced or shredded

Butter, for greasing baking dish

1 tsp dijon mustart (optional)

parsley for garnish

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How to Make Turkey and Swiss Croissant Bake

1. Prep the croissants

Cut the croissants into thirds or large chunks. Slightly stale croissants work best because they absorb the egg mixture without getting too soggy.

If your croissants are frozen, let them thaw first.

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2. Make the egg mixture

In a large bowl whisk together:

• eggs
• milk or heavy cream
• garlic & onion powder
• rosemary
• salt
• pepper
• Mustard (if using)

Whisk until fully combined.

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3. Dip the croissants

Dip each croissant piece into the egg mixture, coating it lightly. Shake off any excess so they don’t become overly soaked.

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4. Layer the casserole

Butter a baking dish and arrange the croissant pieces in the bottom.

Try to place some of the cut sides facing upward — this helps create a beautiful golden top when baked.

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5. Add the turkey

Fold slices of smoked turkey and tuck them in between the croissant pieces so they’re evenly distributed throughout the dish.

This layering technique makes the finished bake look pretty and ensures every bite has turkey.

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6. Add the cheese

Place Swiss cheese throughout the casserole:

• between croissant slices
• inside the folded turkey pieces
• across the top

This helps the cheese melt evenly into every layer.

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7. Pour the remaining egg mixture

Pour any remaining egg mixture evenly over the casserole.

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8. Bake

Bake at 350°F for 30–35 minutes, or until:

• the eggs are fully set
• the top is golden
• the croissants are slightly crispy

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9. Slice and serve

Let the casserole rest for about 5 minutes, (garnish with parsley if using) then slice and serve.

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Tips for the Best Croissant Breakfast Casserole

Use day-old croissants
They absorb the custard better and give the dish a better texture.

Don’t oversoak the croissants
Lightly coat them instead of soaking.

Layer for presentation
Arrange croissants and turkey so the top looks visually appealing once baked.

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Variations

This recipe is extremely customizable.

Try adding:

• sautéed spinach
• caramelized onions
• mushrooms
• crispy bacon
• ham instead of turkey
• gruyere instead of Swiss

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Make Ahead Option

You can assemble this casserole the night before.

Simply cover and refrigerate overnight, then bake in the morning.

This makes it perfect for holiday mornings or brunch parties.

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What to Serve With It

This croissant breakfast bake pairs well with:

• fresh fruit
• breakfast potatoes
• a simple green salad
• mimosas or coffee

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Final Thoughts

This Turkey and Swiss Croissant Bake is one of those recipes that looks impressive but is incredibly easy to make.

With buttery croissants, savory turkey, and melted Swiss cheese baked into a fluffy egg custard, it’s the kind of brunch dish everyone asks for the recipe after one bite.

And because it feeds a crowd with minimal effort, it’s a recipe worth keeping in your regular rotation.