Farm Mouse Cookies

In a mixing bowl, cream peanut butter, butter and sugars. Beat in egg and vanilla. Combine flour and baking soda; gradually add to creamed mixture. Cover and chill dough for 1 hour or overnight. Roll into 1-in. balls. Pinch one end, forming a teardrop shape. Place 2 in. apart on ungreased baking sheets; press to flatten. For ears, press two peanuts into each cookie near the pointed end. Using a toothpick, make a 1/2-in.-deep hole for the tail in the end opposite the ears. Bake at 350 degrees F for 8-10 minutes or until golden. While cookies are warm, insert licorice for tails. Cool on wire racks.