1 can (14 oz) sweetened condensed milk
2 tablespoons unsweetened cocoa powder
2 tablespoons butter (plus more for greasing)
Pinch of salt (optional)
Chocolate sprinkles or shredded coconut (for rolling)
Combine condensed milk, cocoa powder, butter, and salt. Cook on medium flame and stir occasionally until the mixture thickens and pulls away from the sides.
Once the mixture is done, remove it from the flame and transfer it to a greased plate or shallow dish. Chill in the fridge for 2 hours.
Once the mixture is sufficiently thick enough to handle, take a little bit in your hands and roll into balls.
Once all the balls are made, roll them into chocolate sprinkles or shredded coconut.
Serve the prepared brigadeiros in small paper cups.