Scottish Shortbread - cooking recipe

Ingredients

2 1/2 cups flour
1/2 cup sugar, plus some extra to taste
3 tablespoons cornstarch
3/4 lb butter, melted

Preparation

Preheat oven to 350A\u00b0F.
Grease a 9x9\" or 7x11\" baking pan.
Combine flour, sugar, and cornstarch, mixing well.
Slowly stir flour mixture into the melted butter, until well combined.
Gently press dough into pan with knuckles.
Bake for 45 minutes, or until golden brown and cooked through.
Immediately cut into 1\" squares and sprinkle with remaining sugar.
Allow shortbread to cool before removing from pan.