M.D.
My favorite peanut butter cookie recipe is:
1 cup of peanut butter
1 cup of sugar (I usually cut this a bit)
1 egg
1 tsp vanilla
mix, roll into balls, press down with a fork and bake at 350 for 10-15 minutes (I think - I start tracking them at 10 and go from there).
I was just at a camp where they served nutella on top of peanut butter cookies - WOW!