This is a vintage recipe that I'm sharing as the original except I used 2 teaspoons of pumpkin spice instead of 1 teaspoon of maple extract. If you want to make the cake a little less sweet, you can cut the sugar in half and I think it will still be plenty sweet. You can also increase the pumpkin puree for added flavor. The recipe calls for one cup but if you use a 15 ounce can, you will have some left over. Go ahead and add that remaining bit in, if desired.