Description

These Croissant Party Sandwiches are perfect for quick gatherings and casual entertaining. Flaky, buttery mini croissants are toasted to perfection, then layered with a creamy Dijon-mayonnaise sauce, smoked turkey breast, mild Havarti cheese, and crisp romaine lettuce. The combination delivers a delicious balance of textures and flavors in a portable, bite-sized sandwich.

Ingredients

Scale

Sandwich Ingredients

6 mini butter croissants, high-quality, flaky, golden brown
18 slices smoked turkey breast
3 slices Havarti cheese
Romaine lettuce, enough for crisp texture and freshness

Secret Sauce

⅓ cup (5.33 tbsp / 79 ml) mayonnaise
4 tbsp (60 ml) sour cream
3 tbsp (45 ml) Dijon mustard
Pinch black pepper

Cook Mode Prevent your screen from going dark

Instructions

Prepare the sauce: In a bowl, whisk together ⅓ cup mayonnaise, 4 tbsp sour cream, 3 tbsp Dijon mustard, and a pinch of black pepper until smooth and creamy. Set aside for later use.
Toast the croissants: Cut each mini butter croissant in half horizontally. Place the croissant halves in a pan over low heat and toast for a few minutes until lightly golden and warm, maintaining the flaky texture without becoming soggy. Alternatively, place sliced croissants on a baking sheet under the oven broiler for 2-3 minutes, watching closely to avoid burning.
Assemble the sandwiches: Spread a generous layer (about 2 tablespoons) of the secret sauce on one half of each toasted croissant. Layer 3 slices of smoked turkey breast atop the sauce, followed by half a slice of Havarti cheese, then add romaine lettuce for crispness and freshness. Be careful not to overfill to keep the sandwich stable and maintain texture. Finally, top with the other croissant half.
Storage tips: If preparing sandwiches ahead of time, store croissant halves separately in an airtight container and assemble just before serving to prevent sogginess and preserve flaky texture.

Notes

Use high-quality, fresh mini butter croissants for the best flaky texture and flavor.
Toasting the croissants gently ensures they are warm and slightly crisp without becoming soggy.
Assembling sandwiches right before serving keeps croissants from getting soggy.
You can swap Havarti cheese for Swiss or mild cheddar if preferred.
For a spicier kick, add a few drops of hot sauce to the secret sauce.
These sandwiches are best served fresh but can be refrigerated (unassembled) for up to 24 hours.