Preheat the oven to 350 degrees and mix the following together
1 cup peanut butter
1 cup sugar
1 t. baking soda
1 t. vanilla
(If you put the dough in the fridge for 10 minutes it's easier to work with.)
Scoop out spoonfuls of dough and roll into balls.
Place 1 inch apart on the cookie sheet.
Press gently with a fork to make the cross pattern.
Bake for about 10 minutes. Do not over bake, they get dried out very quickly.