Make a shortcrust pastry from flour, butter, sesame seeds and half of the parmesan. Immediately place in a lightly greased quiche dish and place in the refrigerator for about 30 minutes.
Preheat the oven to 180 ° C.
In the meantime, make a topping from cream cheese, milk, eggs, the rest of the parmesan and wild garlic. Season well.
Steam the red onions in olive oil until translucent and spread on the dough. Pour the egg coating over it and cover with the halved tomatoes.
Bake for about 40 - 45 minutes on top and bottom heat until golden brown.