Tarts are typically baked in a shallow-straight sided pan, or as a thin fruit galette or crostata on a baking sheet. Tarts are most often open-faced without a top, and can even be mini, or a crust and topping without edges like these peach tarts. Similarly, pies are baked in a sloped sided dish or pan and can have a single bottom crust or both a top and bottom crust. Both names are used for pastries like Pop Tarts or hand pies, where small pockets of crust are filled and baked.