Cream butter at room temperature with powdered sugar until fluffy, then add salt, vanilla, vegetable oil and beat again until fluffy.
Add 130 grams of flour and starch, beat. Add another 130 grams of flour and mix until smooth with a spatula. The dough turns out to be lush.
Put the dough in a pastry bag and place small cookies on a greased baking sheet or silicone Mat. Bake in a preheated 180-degree oven for 10-15 minutes, until Golden-beige color.
When baking, the dough melts and the cookies are slightly blurred and stick together. If you want the cookies not to stick together, leave more gaps between them. Divide the finished cookies and put them on a plate while still hot. After 5 minutes, the cookies become firm and crumbly.
Serve with any drinks, especially delicious with milk!