Butter Cookies

In a mixing bowl, cream butter and sugar. Add egg and vanilla; mix well. Combine flour, baking powder and salt; add to creamed mixture and mix well. Place the dough in a cookie press fitted with a heart plate; form cookies on ungreased baking sheets. Bake at 375 degrees F for 6-8 minutes or until set but not brown. Cool on wire racks. Beat butter, sugar and vanilla until smooth. Blend in enough milk until desired spreading consistency is reached. Add food coloring to a portion or all of the frosting if desired. Frost cookies. ');