-- When you press
each square of dough into the muffin cups, you want most of the muffin cups sides to be covered with dough, letting the four corners point up / rest on the top of the muffin tin (see the step - by - step picture below).
Carefully cut
the square of dough into 16 squares.
Add 1/2 a tablespoon of nutella into
each square of dough, then fold into the shape of a triangle and using a fork pierce down on the outer edges (on both sides) to seal the dough, add them to a baking tray lined with parchment paper