My DS2 makes Peanut Butter Cookies which are so easy and taste great. Obviously if there are peanut allergies you wouldn't make them.

Recipe

1 cup Peanut butter
1 cup Sugar
1 Egg

Combine all the ingredients, roll into balls, press down slightly & cook.

It might seem like there are ingredients missing but there isn't. Everything comes together really well. We often add some choc chips to the mix just to make something a little different.