In a large bowl, combine the warm milk, melted butter, sugar, and yeast. Allow this mixture to sit for about 5-10 minutes until it becomes frothy.

Add the egg to the warm mixture and whisk gently until combined.

Gradually add in the flour and salt, mixing until the dough begins to form.

Transfer the dough onto a floured surface and knead for about 5-7 minutes until it’s smooth and elastic.

Place the dough in a greased bowl, cover it with a damp cloth, and let it rise in a warm area until it has doubled in size, around 1 hour.

Once risen, punch down the dough, then roll it out into a large rectangle, about 1/4 inch thick.

Spread Nutella evenly across the surface and sprinkle with cinnamon.

Tightly roll the dough from one end to the other to create a log and slice it into 12 pieces.

Place each sliced roll into a greased baking dish, cover, and let them rise once more for about 30 minutes.

Preheat your oven to 350°F (175°C). Bake the rolls for 20-25 minutes until they are golden brown on top.

If desired, mix powdered sugar with a little water or milk to create a simple icing. Drizzle it over your warm rolls, and enjoy!