To prepare the filling, in a mixer combine the guinea fowl meat, 1 egg, 50 g of grated Grana Padano, a pinch of nutmeg, and salt and pepper. Blitz until the mixture is smooth and even.
Roll out a thin sheet of pasta and cut out 4-cm squares using a cutter. Put a bit of filling in the middle of every square and close the squares by folding first into triangles, then joining the two extremities at the base around your finger and pressing well around the edges.