Take out the dough from the fridge.
Put the butter into a small microwave-proof bowl and heat it for 10 seconds. Repeat these 10 seconds until the butter is slightly softened. Don’t melt it completely, because the filling will just flow out of the sides of the buns.
Add the sugar, cardamom, cinnamon, and salt into the bowl and stir with a fork to combine everything into a paste.
Roll out the dough to around 50 x 50 cm.
Spread the filling evenly onto the dough.
Fold over one half onto the other. Now you should have a piece of dough with filling in between and 25 x 50 cm measurements.
Divide the 50 cm long side by 12 and cut roughly 4 cm wide (and 25 cm long) strips.
Hold a strip of dough on one end between thumb and index finger of hand 1 and use hand 2 to wrap the dough strip around index and middle finger of hand one.
Use the last 5 cm of the dough strip to wrap around the bun to create the iconic cardamom bun look.
Repeat this with every strip of dough.
Place them in a 30 x 40 cm baking dish and put them on the middle baking rack in your oven (turned off).