Roll out babka to ¼" thick and 16" by 12".
Keep the long side toward yourself for easy rolling.
Spread the filling nicely leaving the borders about ¼"
Now with floured hands, lightly make the roulade or jelly roll starting from the length side closest to you.
Position the roll with seam side down. Pinch to seal both the ends of roulade.
Now using a sharp knife, carefully cut the roll lengthwise starting from the top and finishing at the other seam. This divides the roll into two equal halves.
The chocolate layers are now visible. Now carefully, from the top side start braiding both the parts.
Now you can make cut into equal parts to make different shapes or place the braided dough in the pans in which you want to bake.
Alternatively, you can also give dough the wreath shape.
Lightly brush oil in pans and also, line the pans with parchment paper.
Place dough in the pans. I divided the dough and baked one half in a loaf pan(6" by 2" by 2") and other half in tube pan of 1 Cup size.
Keep the pans in a warm place for second proofing. Cover the dough with cling film or damp cloth.
Proof the dough for 30-45 mins depending on the weather.
Preheat the oven to 200°C or 400°F. For OTG, preheat on both the rods and fan on mode, for 10 mins.
Give milk wash before baking the bread.
Bake for about 30-40 mins at 200°C or 400°F till it is golden brown in color. Use a good oven thermometer to keep a check on oven's internal temperature.
Once done, take out the pans. Let the babka cool completely before slicing.
Refrigerate in an airtight container. Warm the bread a bit before serving.