Heat oven to 350°. In medium-size bowl, beat together peanut butter, brown sugar, egg and baking soda until mixture is smooth and well blended. Drop dough by rounded teaspoonfuls onto ungreased baking sheets, spaced about 2 inches apart. Bake at 350° until cookies are puffed and slightly golden but still soft to the touch, about 10 minutes. Let cool on baking sheet on wire rack 5 minutes; transfer cookies to wire rack and let cool completely.
Mary Cox, Columbiana, Ohio