1/4 cup Water mixed with 1/4 cup sugar (for simple syrup)
Instructions
In a large bowl or the bowl of a stand mixer, combine the lukewarm milk, sugar, and yeast. Let it sit for about 5 minutes until foamy. Add the eggs, salt, and half of the flour. Mix with a dough hook on low speed. Gradually add the remaining flour and the softened butter, one tablespoon at a time, until a smooth, slightly sticky dough forms.
Transfer the dough to a lightly oiled bowl and cover it with a clean kitchen towel. Place it in a warm, draft-free spot and let it rise for about 1.5 to 2 hours, or until it has doubled in size. You can also let it rise in the refrigerator overnight for a deeper flavor.
While the dough rises, place the diced apples in a saucepan with the brown sugar and cinnamon. Cook over medium heat for about 8-10 minutes until the apples are tender and the liquid has evaporated. Let the mixture cool completely before using it in the dough.
Punch down the risen dough and roll it out on a floured surface into a large rectangle (about 12×16 inches). Spread a thin layer of caramel sauce over the dough, leaving a small border. Evenly distribute the cooled apple mixture over the caramel.
Starting from the long side, roll the dough tightly into a log. Use a sharp knife to cut the log in half lengthwise, exposing the layers. Twist the two strands over each other to form a braid. Place the braided dough into a greased loaf pan, tucking the ends under.
Cover the loaf pan and let the dough rise again for 45-60 minutes. Preheat your oven to 350°F (175°C). Bake the babka for 35-45 minutes, or until the top is deep golden brown and the internal temperature reaches 190°F. If the top browns too quickly, cover it loosely with foil.
While the babka is baking, boil the water and sugar to create a simple syrup. As soon as the babka comes out of the oven, brush the syrup generously over the hot crust. This keeps the bread moist and adds a beautiful shine. Allow it to cool in the pan for 20 minutes before transferring to a wire rack.