Preheat your oven to 160°C and line a baking tray with parchment paper.
In a large mixing bowl, cream the softened butter and icing sugar together until light and fluffy. Add the vanilla essence and mix again until fully incorporated.
Add the flour, cornstarch, salt, and cinnamon. Gently fold everything together until a soft dough forms.
Fold in the chopped toasted pecans until evenly distributed throughout the dough.
Scoop portions weighing approximately 35–40 grams each and place them on the prepared baking tray.
Gently flatten each cookie slightly with your hand or the bottom of a glass.
Chill the tray in the refrigerator for 15–20 minutes.
Bake for 15–18 minutes, or until the edges are lightly golden.
Allow the cookies to cool on the tray for a few minutes before transferring them to a wire rack to cool completely.