To prepare classic shortbread cookies that melt in your mouth, a number of ingredients will be required. The main components include 250 grams of melted butter, half a teaspoon of vanilla extract, a quarter cup of powdered sugar, one third cup of icing sugar, one third cup of cornstarch, and two whole and one third cups of all-purpose flour.
The preparation process begins by beating the chilled butter, vanilla extract, sugars, and cornstarch in a small bowl using an electric mixer until a thick mass is obtained. Then, using a spoon, one cup of flour must be added and gently incorporated, followed by adding the remaining flour.
After this, the oven is preheated to 160°C and the cookies are baked for thirty minutes. While the cookies are still warm, they should be rolled in powdered sugar.