Step #1 In a large saucepan, sprinkle in the semolina in a steady stream, heat the milk & when just on the point of boiling, stirring briskly with a wooden spoon.
Step #2 Simmer the semolina for 2 mins then remove this from the heat & stir in the half the butter, most of the cheese (leave some for topping the bake) & the spinach, nutmeg & salt & pepper; allow this to cool for 5 mins.
Step #3 Stir in the eggs then tip the mixture out onto a shallow baking sheet, spreading it out to 1 ½inch thickness; allow this to cool completely, then chill until solid.
Step #4 Stamp out the gnocchi with a plain round cutter with a diameter of 1 ½ inches; reserve the trimmings.
Step #5 Place the trimmings in the base of a greased shallow ovenproof dish then arrange the gnocchi rounds on top; brush the tops with the remaining butter & sprinkle with the last of the cheese.
Step #6 Bake in an oven pre-heated to 375 F, 190 C, gas mark 5, for about 35 mins until crisp & golden on top; serve hot sprinkled with extra cheese.