-This cake has a classic flavor but it also comes out great if you add your favorite spices. You could add some cinnamon, nutmeg, mace, cardamom, or allspice.
-If you use coconut oil instead of vegan butter for making the topping, you may notice that the oil may slightly solidify the next day, especially if you're in a cold environment. This doesn't affect the taste but if it bothers you, throw the cake under the broiler for a few minutes right before serving to guests. It will look like you just baked it again.