After the butter, send the chocolate broken into pieces and mix the pudding again until it completely dissolves.
Now there are two scenarios:
1) the resulting pudding can be spread out for solidification in portion creamers or glasses and sent to them for solidification (do not forget to cover with cling film to avoid the appearance of the same crust)
2) put the whole pudding in one bowl, cover with cling film and refrigerate until thickened and cooled. Then we fill the cooking bag with them and open it beautifully in a serving dish (I chose this option)
Decorate the pudding on your own! I baked these cookies with pink beads.