Add <quantity>100<unit>g</unit></quantity> of sugar, a pinch of salt, and <quantity>115<unit>g</unit></quantity> of butter to the bowl of a stand mixer

Add <quantity>5<unit>g</unit></quantity> of vanilla paste and whisk with the paddle attachment on medium-low speed until combined

Add in <quantity>1</quantity> egg and continue beating at the same speed. Stop beating, add <quantity>40<unit>g</unit></quantity> of cornstarch and mix at low speed until roughly combined

Add <quantity>240<unit>g</unit></quantity> of all-purpose flour in two batches while mixing on low speed until combined

Transfer the dough to a counter top lined with parchment paper

Cover with another sheet or parchment paper and roll flat until about <quantity>3<unit>mm</unit></quantity> thick

Rest the dough on a flat tray in the fridge for 30m until chilled

Peel off the parchment paper from both sides and remove one sheet. Cut the cookies with a cookie cutter and place them on a baking tray lined with parchment paper or a silicone baking sheet

Shape with you favorite desing, if desired. Coat the cookie cutter with additional cornstarch if needed

Preheat the oven to <temperature>165<unit>°C</unit></temperature>

Freeze the tray for 20m until the cookies are firm

Bake the cookies for 10m until light golden brown. Turn off the oven and leave the cookies inside for 5m

Transfer to a serving plate and let cool down. The vanilla cookies are ready

Enjoy! Kids will love it!