1 . Stage
We mix sugar, cocoa, milk and butter, put on medium heat. Bring to a boil, stirring constantly.
2 . Stage
After the mixture boils, detect one and a half minutes and then remove from heat.
3 . Stage
Add a pinch of vanillin and peanut butter. Mix well. Add the oatmeal.
4 . Stage
Spoon the mixture onto baking paper, forming cookies. Allow to completely cool in a cool place.