Prepare all the ingredients.
In a pot, mix the milk with 100 g butter, salt, pepper and grated nutmeg.
When boiling, and when the butter is melted, sprinkle the semolina...
...and mix with a wooden spatula.
Cook for a couple of minutes, constantly stirring. The semolina will swell and get a thicker texture.
Remove from the heat, add the eggs...
...and mix vigorously. Cook again for a couple of minutes.
Remove from the heat...
... and add 50 g of gratted cheese.
Mix and adjust the seasoning as required.
Slightly grease a shallow pan.
Pour the gnocchi into the pan...
...level and make the surface and sides even. Cover with plastic wrapping and leave it to cool.
Unmold on the counter...
...and cut the gnocchis with a plain cookie cutter...
...wasting as little material as possible.
Put the gnocchis in a lightly-greased serving dish.
Sprinkle the gnocchis with 100 g gruyère and 50 g of melted butter.
Broil in a warm oven (200°C or 392°F)...
...for 5 - 10 minutes.
Serve immediately.