In a mixing bowl, combine flour, sugar, yeast, and salt.

In a separate bowl, whisk together the warm milk and eggs, then add them to the dry ingredients.

Mix until a dough forms, then knead for about 5-7 minutes until smooth.

Add the softened butter and knead until fully integrated.

Place the dough in a greased bowl, cover with a towel, and let it rise for 1 hour.

Melt the chocolate chips and mix with cocoa powder until smooth.

Roll out the dough into a rectangle, spread the chocolate filling, and roll it up tightly.

Place the rolled dough in a greased loaf pan and let it rise for another 30 minutes.

Preheat the oven to 350°F and bake for 30-35 minutes until golden brown.

Allow your babka to cool slightly before slicing.