Non traditional rose cake

Roses do not enter in the recipe..
The Rose cake is typical from the region where I come from, even though with a filling different from the one I used in this recipe.
To make the cake one needs two days, at least, which is actually longer than the time is needed to eat it, which means it is worthy!

Recipe:
dough:
4 cups white flour (some people mix it with manitoba.. never tried!)
yeast (a cube of fresh or equivalent dried)

1 cup lukewarm milk
1 cup sugar
Vanilla flavor or Vanilla flavored sugar (1 tbsp is enough)
1 tsp salt
2 eggs
1/2 cup butter


stuffing:
The traditional recipe foresees 1 cup butter + 1 cup sugar.
I already tried it and it is quite good, but this time I used 3 different creams:
- whitish: butter, sugar and cinnamon (for example: 1/2 cup, 1/2 cup, 1 tbsp)
- blackish: almonds powder, poppy seeds & marzipan, mixed with some lukewarm milk (for example: 1/2 cup, 1/2 cup, 2 tbsp, 1/4 cup)
- brownish: simply nutella, or make up a cream melting milk chocolate and adding some cream to make it softer.
As far as the quantity of each ingredient, it is pretty much up to your taste... the consistency must be creamy and spreadable (see below);

Procedure:
Prepare a "starter" for the dough mixing 1 cup flour with the yest melt in 1 cup milk.
Let it grow for some hours covered with a towel or some plastic pape (between 2 and 12... depends on the temperature: usually I do this recipe in winter, and since I am in Germany, I leave it for 12 hours).
When the starter has grown, join the remaining flour, the flour, the eggs, the sugar, and in the end the butter.
Let the dough grow for a few hours (at least 2), covered, in a warm place.
Prepare in the meantime the 3 stuffing types.
Divide the dough in 3 parts and flatten the three of them with the rolling pin until the thickness is about 0.5 cm. Spread on each a different filling and roll it. Cut it in pieces and place in a pan mixing the "roses" or setting them in a composition.. You can also cut the edges of each rose with a scissor. An option is to paint the roses with some milk.
Then let it grow again for 30 min -1 hour and cook it for 180 C (or 360 F ) for 30 min. Check the cooking point with a stick.