Ready to make these delightful Nutella Rolls? Follow these simple steps:

1. Activate Yeast: In a bowl, combine warmed milk, sugar, and yeast. Let it sit for 5-10 minutes until frothy.
2. Mix Wet Ingredients: In a separate bowl, whisk together melted butter and the egg.
3. Combine Mixtures: Once the yeast is activated, add the wet mixture to the yeast mixture.
4. Combine Dry Ingredients: In a large mixing bowl, whisk together flour and salt.
5. Form Dough: Gradually add the wet ingredients to the dry ingredients, mixing until a dough forms.
6. Knead: Turn the dough onto a floured surface and knead for about 5-7 minutes until smooth and elastic.
7. First Rise: Place the dough in a greased bowl, cover with a damp cloth, and let it rise for 30-40 minutes, or until doubled in size.
8. Roll Out Dough: Once the dough has risen, punch it down and roll it into a rectangle about ¼ inch thick.
9. Spread Nutella: Evenly spread Nutella over the dough, leaving a small border around the edges.
10. Roll Up: Starting from one long edge, roll the dough tightly to form a log.
11. Slice Rolls: Cut the rolled dough into 10 equal pieces and place them in a greased baking dish.
12. Second Rise: Cover the dish with a cloth and let the rolls rise for an additional 20 minutes.
13. Preheat Oven: While the rolls are rising, preheat your oven to 350°F (175°C).
14. Prepare Egg Wash: Beat the remaining egg and brush it over the tops of the rolls.
15. Bake: Bake in the preheated oven for 15-20 minutes or until golden brown.
16. Cool: Remove the rolls from the oven and let them cool slightly in the dish.
17. Dust with Powdered Sugar: For an extra touch, dust the tops with powdered sugar if desired.

Enjoy the warm, gooey, and stunning Nutella Rolls fresh from the oven!