i made kääretorttu today! it's very simple and you can fill it up with many different ways!
here's the recipe:
1 dl sugar
2 dl white flour
1 tea spoon of baking powder
(some vanilla if you like, but it's not a must. i use 1 spoonful of vanilla sugar)
½dl milk or low fat cream
whip eggs and sugar. mix the baking powder to the flour and add to the egg-sugar foam. mix well and then add the milk/cream.
place baking paper on oven tray and fold from corners (about 30cmx40cm) spread the dough on paper and bake in 250○C for a couple of minutes until it get a little colour