All purpose flour can be used instead of wheat
Any extracts like almond, butterscotch etc. Can be used for flavour
Cinnamon powder can be added
Oil can be used instead of butter
Use 1 tablespoon of flax seed powder/ 1 chia seed with 3 tablespoon of water to replace egg. 1/2 cup of mashed banana/ 3 tablespoon of Peanut Butter /1/4 cup of unsweetned Apple sauce can also be used to replace egg