1. Preheat oven to 350 degrees F and grease one cookie sheet. Follow the directions according to the cookie package, but use the applesauce instead of oil, and the banana as the egg replacer.
2. Put cookies onto prepared cookie sheet and bake for 13-15 minutes, until brown and toothpick comes out clean in the cookie.
3. Let sit until cool, and repeat until you run out of cookie dough.
Source of recipe: Modified the recipe from Duncan Hines package.