1 cup butter (no substitutes)
1/2 teaspoon vanilla extract
2 cups all-purpose flour
1 cup confectioners' sugar
1 cup miniature semisweet chocolate chips
Melt butter in a microwave or double boiler; stir in vanilla. Cool completely. In a large bowl, combine flour and sugar; stir in butter mixture and chocolate chips (mixture will be crumbly).
Shape into 1-in. balls. Place 2 in. apart on ungreased baking sheets; flatten slightly. Bake at 375 degrees F for 12 minutes or until edges begin to brown. Cool on wire racks.