Sift the flour into a bowl and mix with the oatmeal, vanilla sugar, salt and sugar. Spread the softened butter in flakes on top. First work with a knife, then with your fingers to make crumbles. Finally mix in the chocolate chips.
Using a tablespoon, place small heaps of the mixture on a baking tray lined with baking paper. Gently squeeze something with your fingers.
Bake in a hot oven at 180 ° C for about 12-15 minutes and let cool on the tray.
Then put them on a grid until they are completely cold.