Melt butter in saucepan. Add milk and remove from heat. Crumble yeast into a large mixing bowl. In a small bowl, mix together sugar and cardamom. Add sugar cardamom mixture to the yeast and add milk mixture. Stir in the flour a little at a time and work dough until smooth and shiny. Cover and let rise for 10 minutes.
To make the filling, combine butter, sugar, cinnamon and nuts.
Preheat the oven to 400 degrees F.
Turn dough out onto a board and knead well. Divide into 4 parts. Roll each piece into a 14 by 8-inch rectangle. Spread with filling. Roll up from the long side and place on a baking sheet. Clip each at 1-inch intervals with a scissors held perpendicular to the top. Pull each cut out to the sides, alternately, to make a pattern exposing the filling. Brush with beaten egg and sprinkle with pearl sugar and chopped almonds.