Warm the milk in the microwave, not boiling, just above lukewarm
Chopped the butter and melt it in the warm milk
In a very large bowl put the milk and butter, add the yeast, salt, and sugar – then mix together
Adding 1 cup of flour at a time and mix/knead together
Once all flour is added, knead for about 2 to 5 minutes
Cover the bowl with a cloth and leave in a warm place for about 2 hours or dough has doubled in size
Grease a large pan about a 15 x 17 size
Pouch the dough down
Now squeeze off a bowl of dough about the size a little larger than a golf ball
Put a few chocolate pieces inside, fold over and over to make a ball
Set in the greased pan
Continue with the rest of the dough until the pan fills
If needed get a second pan
Cover with a cloth, set in a warm place, and let rise until double about 2 hours
Preheat oven to 425 degrees
Place rolls in oven and bake for 10 minutes
Remove from oven and butter the top of each roll with a little soft butter
Let cool a little before serving