Made from cream cheese, ricotta cheese, cottage cheese or sometimes Swiss or cheddar cheese, a cheesecake may or may not have a crust, which can be a light dusting of bread crumbs, a cookie crust or a pastry crust. The filling is made by mixing the cheese with eggs, sugar and whatever flavoring you are going to use—e.g., pumpkin. After baking, the cheesecake is chilled and topped with whipped cream, fruit or chocolate shavings.