Step 1

With a beater, cream the butter and sugar together until fluffy. Combine and sift the flour and cornstarch together. Slowly add the combined flour mixture to the butter mixture until a crumbly dough forms.

Step 2

Grease a 9x13 pan and add the dough into the pan. Press the dough into the pan until it's flat and even.  With a fork, poke holes all over the top of the dough.

Step 3

Bake at 300 for 45 minutes.

Step 4

Once baked, sprinkle the shortbread with granulated sugar. Cut into squares and let it cool before eating. It's so delicious warm!