Peanut Butter Cookies

½ c. sugar
½ c. brown sugar
1 egg
1 tsp vanilla
1 ¾ c. flour
1 tsp soda
½ tsp salt
½ c. butter
½ c. peanut butter
Optional - 1 package Hershey Kisses

Cream butter and sugars – adding egg and vanilla. Add dry ingredients. Roll into balls. (I used a cookie scoop and skipped the "rolling into balls" stage.) Do fork criss-cross and place on ungreased baking sheet. Bake 8-10 minutes at 375°. OPTIONAL:  At 8 minutes add Hershey Kiss and then bake 3 minutes longer.