Generally, a raspberry tart is a type of dessert that is typically made up of a buttery, flaky pastry crust filled with raspberry-flavored elements such as raspberry jam or preserves, fresh raspberries, or sometimes a custard. The tart can vary from a simple rustic version to more refined French-style tarts, like this one, which combines a pâte sablée (a tender, buttery shortcrust), pastry cream, and fresh raspberries.