1 (14 oz.) can sweetened condensed milk
3/4 - 1 c. peanut butter
1 egg
1 tsp. vanilla
2 c. Bisquick baking mix
Granulated sugar

Preheat oven to 350 degrees. In large mixer bowl, beat sweetened condensed milk, peanut butter, egg and vanilla until smooth. Add biscuit mix; mix well. Chill at least 1 hour. Shape into 1" balls. Roll in sugar. Place 2" apart on ungreased cookie sheet. Flatten with fork. Bake 6 to 8 minutes or until lightly browned. Store in tightly covered dish.