Cut the peppers into strips and remove the seeds. Cut the onion into medium-thick rings. Put the gyros in a pan and fry briefly. Important: do not fry until it is too dry when gratinating.
Put the gyros in a baking dish without any liquid. Mix in the onion rings and the pepper strips and cover everything with the hollandaise sauce. Finally, put the grated mozzarella on top. Gratinate in the oven at 175 ° C for about 20 minutes until a golden-brown cheese crust forms.
Homemade french fries made from fresh potatoes, croquettes or hash browns also taste great.