Take out the butter, measure it and cut it to small cubes. Place it in a bol, and mix it until creamy and silky (probably it's a good idea to have the butter at room temperature)
Make sure there are no butter pieces left on the side of the bol
Add the dulce de leche and mix it on low speed until it's homogenous
melt the chocolate *don't overheat it, and add it to the mix in 2 episodes. Mix it gently until everything is smoothly incorpoated.
Cover it and let it at room temperature until it firms up a bit, if it's very hot outside, place it in the fridge for a little bit. After this is ready to be used.
If the cream firms up too much, you can place it in the microwave for a short 5-10second burts to make it softer for filling or decorating
