Summer desserts are meant to celebrate the season. Fruit pies, cobblers, buckles, and crisps are made for the sweet fruits of summer. These casual yet undeniably satisfying fruit desserts depend upon the best seasonal fruits, usually topped with a cake, streusel, or both. There are differences between these traditional American desserts, so here is a quick primer: A fruit pie made with a classic pie crust can be single or double crusted and features a cooked fruit filling interior. A cobbler is a deep-dish fruit pie with a biscuit-style crust baked on top. A buckle is a cake made in a single layer, usually with berries mixed in the batter. It is covered with a streusel-like topping which gives it a crumpled or buckled appearance. And finally, we have the classic fruit crisp: a mixture of selected fruit combined with a bit of flour and sugar and finished with a …