Once the dough is ready, place it onto a lightly floured surface and begin to roll it into a rectangle, roughly 13x10". Spread Nutella in an even layer on the surface, leaving a 1/2 inch border around the edge. Start rolling inwards from the longer side and form a tight log. Pinch the ends.
With a sharp knife, cut the roll in half lengthwise, leaving about 1-inch of dough attached (uncut) at the top. Twist ends around each other, making sure to turn cut side towards the top. Carefully lift the bread into a greased 9x5 loaf pan, cover lightly with plastic wrap and leave to rise in a warm place for 30 minutes.