In a large bowl, combine the all-purpose flour, sugar, salt, and instant yeast. In a separate bowl, whisk together the warm milk, melted butter, eggs, and vanilla.

Pour the wet ingredients into the dry ingredients and mix to form a dough.

Knead the dough on a floured surface for about 10 minutes until smooth. If the dough is too sticky, add more flour as needed.

Place the kneaded dough in a greased bowl, cover with a towel, and let it rise in a warm place for about 2 hours or until it has doubled in size.

After the dough has risen, punch it down and roll it out into a rectangle. If you choose, sprinkle chocolate chips or cinnamon sugar over the dough for added flavor.

Roll the dough tightly into a log shape and slice it in half lengthwise to reveal the filling. Twist the two halves together to form a braid.

Place the braided dough on a baking sheet lined with parchment paper. Cover and let it rise for another 1-2 hours.

Preheat the oven to 350°F (175°C). Brush the dough with the egg wash you prepared earlier.

Bake for 35 to 45 minutes or until golden brown. Once cooked, let it cool before slicing and serving.