In a small bowl, combine the warm milk and yeast. Let it sit for about 5-10 minutes until it’s nice and frothy.

In a large bowl, whisk together the melted butter, sugar, egg, and that lovely yeast mixture until well blended.

In a separate bowl, mix the flour and salt. Gradually add this to the wet mixture, stirring until a sticky dough forms.

Lightly flour a clean countertop and turn your dough out onto it. Knead for about 5-7 minutes until it’s smooth and elastic.

Place your kneaded dough in a greased bowl, cover it with a clean kitchen towel, and let it rise in a warm place until it doubles in size (about 1 hour).

Once your dough has risen, gently punch it down, then fold in the chocolate chips until evenly distributed.

Divide the dough into 12 equal portions. Shape each portion into a ball and arrange them closely together in a greased baking dish.

Cover the buns again and let them rise for another 30-45 minutes.

Preheat your oven to 350°F (175°C). Brush the tops of the buns with the beaten egg, and sprinkle with coarse sugar if desired.

Bake for about 25-30 minutes or until the tops are golden brown.

Let the buns cool in the pan for a few minutes before transferring them to a wire rack.