In a big baking bowl, crumble the yeast.
In a sauce pan melt the margarin.
Add the milk in the melted margarin. Stirring until it becomes Luke warm.
Pour the liquid over the yeast and stir gently until the yeast is resolved.
Add the sugar, 1 egg, salt, cardamom and almost all of the flour. Work it all to a dough with your hands until it's not sticking on the bowl.
Cover the bowl with plastic foil and let rest for 1 hour.
Take away the plastic foil and work in the rest of the flour.
Divide the dough in 6 and form balls.
Place a baking paper on a baking sheet. Place the buns on top, cover with a baking towel. Let them rest for 1 hour.
Preheat the oven at 220 degrees Celsius.
Stir 1 egg and brush the buns.
Place the buns in the middle of the oven for 10 minutes.
Take the buns out and let cool down.
Whip the cream and vanilla sugar to a fluffy foam.
Cut away the top of each bun.
Dived the nutella evenly on the buns.
Spread evenly the whip cream on the nutella with the help of a piping bag.
Place the top back on each semla. Sprinkle son icing sugar on top before serving