Step 4: Place a Tsp of Nutella on the wide end of each triangle, and use a spoon to spread it out just a bit over the triangles. Try to leave at least 1/2 -inch border all the way around the edges of the triangle to prevent the Nutella from seeping out when baking.
Step 5: Beginning from the wide end of the triangle, roll the triangle dough up to form a croissant shape. Transfer to the prepared baking sheet and turn the croissant edges slightly to form a "U" croissant shape. Repeat with remaining triangles.