Preheat oven to 375 degrees. Combine peanut butter, shortening, light brown sugar, milk, and vanilla in a large bowl. Beat at medium speed of electric mixer until well blended. Add egg. Beat just until blended. Combine flour, salt and baking soda. Add to creamed mixture at low speed. Mix just until blended. Drop by heaping teaspoonfuls 2 inches apart onto ungreased cookie baking sheet. Flatten slightly in criss-cross pattern with tines of fork. Bake at 375 degrees for 7-8 minutes or until set and just beginning to brown. Cool 2 minutes on baking sheet.

To keep fork from sticking to cookies, dip it in some sugar before pressing it into cookies.