Combine sugar, cocoa, baking powder and flour in a bowl.
Then add yogurt, corn oil and vanilla extract. Knead a uniform dough. Corn oil can be replaced with odorless vegetable oil.
From the dough, make balls with your hands, put them on a sheet covered with parchment, and then slightly press down with your hands. Bake at 180 degrees for 10-20 minutes.
Cool the cookies a little and you can serve.
Cookies on yogurt are prepared very simply and quickly, it turns out quite tasty, delicate inside and crispy outside. If you do not have natural yogurt, you can take any with additives, but then the taste of the cookies may change. Such a liver is perfect for breakfast, as well as a great option if guests came suddenly. It does not have butter and eggs, which makes it light and less caloric.