In a stand mixer add all-purpose flour, salt and sugar as shown. Gently mix the flour mixture on low speed for few seconds. Now add bloomed yeast mixture ( add 1 ½ teaspoon yeast in ¼ cup of lukewarm milk ) to the flour mixture and run the stand mixer for a minute.
Then add 1 cup whole milk to the flour mixture and run the stand mixer for five to six minutes. Now switch off the power. Scrape the dough from all the sides until all the dough mixture combines well. Add a teaspoon of unsalted room temperature butter and start kneading on high speed for four to five minutes.
You can see that the smooth, soft, shiny dough is ready. Check the dough by Window Pane Test. Just stretch the dough and see if the dough doesn’t break. If so the dough is perfect.
Grease a bowl and transfer the dough and smear oil on top of the dough. Cover the bowl with a kitchen towel or cling wrap.
Allow the dough to rise for 11/2 to 2 hours or until it doubles in size. Punch down the dough to deflate the air.
Roll out dough on a lightly floured surface and shape it into a rectangle according to your pan size.
Use a spoon or an offset spatula spread cream cheese over the rolled rectangle dough.
Now spread blueberry jam above the cream cheese.
Using both hands roll up the rectangle as shown and seal well.
Using a knife, gently cut the log leaving the top edge shown.
Divide the halves, with the cut layers facing up.
Now twist the dough as shown and seal well.
Gently lift the dough into the loaf pan. Squeeze the end of the dough and place it. Cover the pan for a second rise until it rises doubled in size.
Preheat the oven to 180 * C and bake the babka dough for 30 to 35 minutes until the top turns golden brown. Remove the pan from the oven. Let it cool in the pan for only eight to ten minutes.