Knead the ingredients for the dough together, then cover and let the dough rise for 20 minutes.
Dice onions, sauté in oil until translucent. Cut the mushrooms into small pieces, add and fry briefly. Season well with caraway seeds and allow to cool.
Add the eggs and sour cream to the mushroom mixture, season well with nutmeg, salt and pepper.
Knead the yeast dough again briefly, put it in a greased springform pan and press one edge down. Put the mushroom mixture on the dough. Cut the bacon into small cubes and sprinkle on top.
Bake in the preheated oven at 200 ° C top / bottom heat for about 1 hour (convection 160 ° C).