Sweet bread with walnut filling - originally Finnish holiday wreath

I read this recipe somewhere months ago and forgot to save it, so I came up with my own version.

It looked like this

I used about 1lb flour, 30g(1ounce) yeast, 1 cup warm milk, half a cup sugar, pinch of salt, 2 egg yolks, half a cup butter/margarine, a teaspoon of ground cardamom seeds and made a light and fluffy leavened dough. I let it rise for about half an hour then rolled it out a little. The filling consisted of coarsely ground walnut, melted butter and sugar. You can mix these and spread on the dough or sprinkle the butter first and then the walnut and sugar (saves you one bowl :)

Then I rolled it up and placed in a cake tin(the one that has a whole in the middle), let it rise again, then baked at 200C (400F) for about 30minutes. Sprinkling some milk on it in the last couple of minutes makes the bread softer!

Later, I found the original recipe online.

The ingredients are basically the same(more butter and a tablespoon of flour in the filling, and almond flakes on the top), but the shape is a bit different. They fold the roll into a circle, cut it into slices, but not cutting through to the bottom, and move the slices apart a bit, in and out. It looks like this: