Combine condensed milk, cocoa powder, and butter in a saucepan.

Cook over medium heat, stirring constantly with a wooden spoon.

Continue cooking for 10-12 minutes, or until the mixture thickens and you can see the bottom of the pan when tilting it.

Remove from heat and transfer the mixture to a greased bowl to cool.

Butter your hands to prevent sticking.

Roll the cooled mixture into small balls.

Roll each ball in chocolate sprinkles until completely covered.

Enjoy!

For Brigadeirao variation: Add small pieces of cookies (such as shortbread) to the warm mixture.

Serve Brigadeirao in a large bowl.