Roll out the puff pastry round and line a springform pan (18 cm diameter) lined with baking paper. Pull up a small edge. Pierce a few times and refrigerate.
Whisk eggs with milk, spices and parsley. Grate the cheese and spread it on the dough with the ham, pour the egg milk over it. Bake in a preheated oven at 175 ° C for 30 - 40 minutes, cover with aluminum foil if necessary.
Garnish with fresh spring onions and serve while warm.
Personally, I like this - not true to original - variation with puff pastry much better.