Melt butter, add milk, mix, add yeast, mix until it dissolves.
Put the mixture in large bowl, add sugar, salt, cardamom, flour, knead the dough, cover the bowl with a cloth and keep it warm for 30-40 minutes until it rises.
Preheat oven to 250*F.
Knead the dough once again, take half of it and roll it to form square, brush it with melted butter, sprinkle with sugar-cinnamon mixture.
Roll it up, cut slices 4 cm thick. Put each slice at the baking tray, keep it warm for 30 minutes until it rises.