For 3 x 8-inch layers rather than just 2 layers, multiply the recipe by 150% and divide the cake into 3 cake pans. If you have a large oven, this will take around the same amount of time to bake. Alternatively, you can use the recipe as is and bake it in 3 x 6-inch (15 cm) cake pans. This will take around 40 minutes to bake. A 6-inch cake will be as tall as my vegan pink champagne cake.