Crispy, Cheesy Party Sandwiches Recipe

Ingredients (10)

• 36 slices thin white bread, crusts removed (see note)
• 8 ounces (2 sticks) unsalted butter, melted
• 1 (14-ounce) can hearts of palm, drained and finely chopped
• 4 ounces sharp cheddar cheese, finely grated
• 3 tablespoons mayonnaise
• 2 tablespoons finely minced onion
• 1 teaspoon dried mustard
• 1 teaspoon grated lemon zest
• 1/8 teaspoon cayenne pepper
• Salt and pepper