Peach crumble is a melt-in-the-mouth dessert with fruity and spicy shades Cinnamon powder, flour and butter are rubbed between the palms to get a crumbly mixture, which is layered upon canned peaches, topped with raisins, and baked for a while to get a uniquely-textured dessert. Remember that the peach crumble tastes best when it is warm.