You can still make these appetizers if you don't have a muffin tin. To do so, cut the puff pastry into 3-inch squares. Place the squares on a baking sheet. Top with a dollop of jam and a piece of goat cheese. Roll the corners of each appetizer up slightly, so prevent the cheese and jam from falling out. Bake as directed. They will obviously be more flat in appearance, but they will still be pretty and taste delicious.