Apple crumble cake is packed with warm cinnamon apples and a buttery crumb topping. this cake is moist, deliciously spiced, and drizzled with caramel sauce. This cake is baked in a 9inch round nonstick cake pan from baker’s secret to get a perfect crumb structure with an even bake and golden-brown crumb topping 9 inch round nonstick cake pan, bakers secret