Cream together sugars, shortening, eggs, peanut butter, and vanilla.
Add dry ingredients and mix until combined.
Roll into balls, place on cookie sheet, and smoosh with a floured fork or meat pounder. The meat pounder makes a more interesting and somewhat festive design.
Bake at 350° for 8 – 12 minutes. Don't overbake; the cookies should be barely tan on the bottoms.