Chunky Shortbread

Directions

1. 1
   Heat oven to 350F.
2. 2
   Beat butter and superfine sugar in large bowl with mixer on high speed until light and fluffy.
3. 3
   Mix flour and corn starch.
4. 4
   Gradually add to butter mixture, beating well after each addition.
5. 5
   Stir in chocolate.
6. 6
   Drop by heaping tablespoonfuls, 1 inch apart, onto baking sheets.
7. 7
   Bake 20 to 25 min.
8. 8
   or until lightly browned.
9. 9
   Cool 5 min.
10. 10
    on baking sheets.
11. 11
    Remove to wire racks; cool completely.
12. 12
    Sprinkle with icing sugar.