Cream the shortening with the brown and white sugars.
Beat eggs and mix with the creamed shortening. Add peanut butter and mix.
Sift the baking soda and flour together. Stir or using a hand mixer, blend with the peanut butter mixture.If using chocolate chips, fold in at this point.
Prepare your baking sheet with a no stick spray or parchment paper. Preheat oven to 350℉.
Roll the dough into balls (using a 1 tbsp measure works well). Place on baking sheet and flatten with a slightly wet fork.
Bake at 350℉ for approx. 15 mins. They should be just starting to brown. Let cool on pan and move to rack.