Chipits Polka Dot Shortbread

1 c Butter, softened

1/2 c Fine granulated sugar

1 3/4 c All-purpose flour

1/4 c Rice flour

1 pk Semi-sweet chocolate chips

Cream butter and sugar using electric mixer until light and fluffy. Stir in remaining ingredients. Spread into bottom of 13x9-inch ungreased pan. Bake at 275F (140C) for 45 minutes or until lightly golden

around edges. Cut into bars. Cool. Source: Chipits ad, Chatelaine magazine, December 1993, page 119