The first step is to sprinkle some flour on the table. If your dough is very thick, that is, it measures more than five millimeters thick, roll it out a little. Next, cut the dough into triangles. If the dough is round, cut it like pizza slices. If it is square, divide it into two large rectangles, and then cut small triangles. Each triangle must be approximately 7 cm on the aside.

Take a tablespoon of Nutella, and spread it over the first triangle. It respects the edges very well; it should only be in the central part. If you are a newbie to croissants, a teaspoon of Nutella in the widest part of the triangle will be fine. No need to spread it.

On the widest part of each triangle, place a tablespoon of chocolate chips, and half a tablespoon of chopped walnuts.

Then, select the first triangle, and fold the two ends where the chocolate chips are inside, trying to cover the filling. Then continue rolling the croissant on itself, always trying to keep the Nutella filling inside. Repeat with all the croissants.

Place the croissants on the tray that you prepared previously, with a distance of at least three centimeters between one and the other. Varnish them with beaten eggs and take them to the oven. Bake them for about ten to fifteen minutes, until they look completely golden.

Decorate the croissants with powdered sugar and more Nutella.