First, cream the butter and add the egg and semolina.
Season to taste with salt and nutmeg and let it rise briefly.
Use a tablespoon to make dumplings from the mixture and let them cook gently in hot water or soup.
Instead of semolina, you can also prepare these dumplings with polenta (cornmeal). Polenta gnocchi, however, have to steep and cook much longer (about 30-45 minutes each).