If you can't get enough pumpkin spice during fall, we have one more recipe you must try out. For our Pumpkin Spice Cake recipe, we combined silky flan with moist pumpkin spice cake and buttery caramel sauce in one incredible confection. We were inspired by a Mexican dessert called “impossible flan”. While it is not at all difficult to make, our Test Kitchen recommends using a light-colored Bundt pan for the best results. A dark-colored pan may get too hot and overbake the cake.