Combine flour, baking soda, and salt together in a small bowl.
Cream together shortening, peanut butter, sugar, brown sugar, egg, and vanilla. Add in flour mixture. Mix until well combined.
Chill in refrigerator.
Roll into 1 inch balls, then into sugar.
Bake for 7-8 minutes at 350 degrees.
Remove from oven and add kisses. Bake for an additional 1.5-2 minutes. Cool on waxed paper lined counter top.