Frangipane
A thin layer of frangipane baked under a pinwheel of sliced fruit in a tart shell crust not only adds richness and the flavor of almonds to complement the sweet-tangy fruit, it also helps keep the tart shell crisp because it acts as a barrier between fruit juices and the pastry. Almond paste is available in the baking aisle of supermarkets. It is not marzipan, which has more sugar and is usually used for modeling and shaping.