ACE Bakery Mini Crab & Gruyère Melts

Ingredients

• 8 ACE Bakery® BYO Brioche Cluster Buns split crosswise
• 6 tablespoons truffle butter or unsalted butter, softened (see Note)
• 1/2 cup mayonnaise
• 1/4 cup minced red onion
• 1/4 cup chopped flat-leaf parsley
• 1 tablespoon fresh lime juice
• 1/2 Granny Smith apple—quartered lengthwise, cored and thinly sliced crosswise
• Several dashes of hot sauce
• Salt and freshly ground pepper
• 1 pound lump crabmeat, picked over
• 1 1/2 cups shredded Gruyère cheese