Why peel apples for apple cake?

Peeling apples is typically not required for making an apple cake. The skin can be left on for a rustic touch, or peeled to change the texture and appearance of the cake. Some people may prefer the peel for its slightly tart flavor, additional fiber, and vivid color, while others may find the peel to be too tough or bitter for their taste. Ultimately, whether to peel the apples or not is a personal preference and it does not significantly affect the overall quality of the cake.