This appetizer is so easy to make and so delicious. Try it with variations of cheeses, spices, and meats. • 1 sheet puff pastry, thawed • 3 cups grated gruyere cheese • ¾ cup apricot preserves • 1 package prosciutto • 2-3 sprigs fresh thyme Preheat the oven to 375 degrees. Roll out the pastry