1 (14 oz.) sweetened condensed milk
1 cup peanut butter
1 egg
1 tsp. vanilla
2 cups Bisquick
granulated sugar

Heat oven to 350°.  In large mixing bowl, beat sweetened condensed milk, peanut butter, egg and vanilla until smooth.  Add Bisquick; mix well.  Chill at least 1 hour.  Shape into 1-inch balls, roll in sugar.  Place 2 inches apart on ungreased cookie sheet.  Flatten with fork.  Bake 6 to 8 minutes or until lightly browned (do not overbake).  Cool.  Store tightly covered at room temperature.