Step 1

Preheat oven to 350°. Cream butter, peanut butter and sugars until light and fluffy, 5-7 minutes. Beat in egg. In another bowl, sift together flour, baking soda, baking powder and salt; beat into peanut butter mixture.

Step 2

Drop by level tablespoonfuls 2 in. apart onto ungreased baking sheets. Bake until light brown, 10-12 minutes. Remove from oven; immediately push a chocolate kiss into the top of each cookie. Cool on pans 2 minutes; remove from pans to wire racks to cool completely.