For the dough, put flour, 1/4 teaspoon salt, butter in pieces and an egg in a bowl. Knead quickly with the dough hook of the hand mixer to a smooth dough and cover and chill for approx. 30 minutes. Then spread the dough in a greased tart pan (diameter 26 cm) and let the edges stand up a little.
Cut the onions into cubes and spread them on the dough, just like the ham cubes.
Beat the eggs and cream with the whisk. Season with salt, pepper and nutmeg and pour over the onion and ham mixture.
Bake in the oven at 200 ° C for about 30 minutes.
Tip:
Instead of 250 g of cream, I only took 50 g and topped up the rest with Cremefine.