Start by waring the milk, put it in a large bowl. Add the egg and sugar and mix together.
Add the yeast and combine then add the softened butter. WHisk until the butter melts.
Add the flour and mix using a wooden spoon until it comes together. Transfer unto a clean surface and the dough for about 5 minutes until the dough is soft and not sticky.
Let the dough sit for about 10 minutes just to relax the yeast and not to proof.
As it rests, mix the filling, sugar a nd cinnamon and set aside.
Once the dough has rested, transfer onto a floured surface and roll into a rectangle, 1/4 inch thick. Spread the softened butter evenly onto the dough and sprinkle the sugar cinnamon mixture.
Roll the dough into a long sausage-like shape and using a string or floss, cut the shape into equal circular shapes.
Transfer these rolls into a lined baking tray and let the dough proof for 1 hour in a warm place.
Pre-heat oven to 180 degrees C and bake the rolls for 25 to 30 minutes.
Let them cool and enjoy.