Preheat oven to 350 F. Pour olive oil onto paper towel & cover cupcake tray to replicate nonstick spray.
In electric mixer combine flour, baking powder, peanut butter, & apple sauce. Mix until well combined.
Add in remaining ingredients: olive oil, egg, & honey. Mix on medium speed until all ingredients are combined.
Fill cupcake tray ¾ of the way full & bake for 30-35 minutes or until browned on top.
Clean out mixing bowl & add in frosting ingredients. Mix until well combined. Place frosting into frosting bag & top cupcakes with it.
Decorate with additional dog treats & serve to your pups!