When ready, roll the dough into a rectangle with a thickness of around 1cm (just under ½") with one of the shorter sides facing you.
Spread the butter all over the dough. Combine the sugar and cinnamon and sprinkle all over the butter.
Gently roll up the dough. When done, place with the seam underneath.
Cut the dough into pieces. I wanted large, soft buns so made 10. More traditional kanelbullar are a little thinner, so go with whatever thickness you fancy.
Pre-heat the oven to 250°C (482℉).
Place each piece in a large muffin case and place them on a large oven tray.
Cover with a tea-towel, and leave the buns to rest for around 30 minutes.
Give the buns a good egg wash and sprinkle with pearl sugar.
Bake the buns for around 6-9 minutes, depending on size and thickness. Watch them carefully: They are ready when they turn a deep brown colour. Enjoy warm with a cuppa!