Ingredients

Instructions

  1. Position a rack in middle of oven and preheat oven to 350°F.
  2. Prepare 9x9x2-inch square or 11x7x2-inch baking tray by lining with parchment or greasing with butter.
  3. Sift flour, cornstarch, salt and cinnamon together onto wax paper or medium bowl; set aside.
  4. Beat butter and brown sugar together in a large bowl, until smooth and fluffy.
  5. Using low speed (if using electric mixer), mix in flour mixture, until dough comes together in big clumps.
  6. Add in oatmeal, mixing just to distribute evenly.
  7. Press dough evenly into prepared tray.
  8. Bake for 25 mins, until top is light-brown.
  9. Remove from oven and immediately cut shortbread into squares (6 rows lengthwise, 4 rows across), cutting through to the bottom.
  10. Cool thoroughly in the pan and remove shortbread from pan using a spatula.
  11. The shortbread will become crisp on the outside as it cool, but remain slightly soft inside.
  12. Store cooled shortbread in an airtight contained for up to 4 days or freeze.