Authentic German Onion Pie (Schwabischer Zwiebelkuchen) - cooking recipe

Ingredients

yeast dough
375 g flour
1/2 teaspoon salt
15 g yeast
1 tablespoon sugar
1/2 liter milk
60 g soft butter (not directly out of fridge but warmed a little)
topping
50 g ham, in cubes
50 g butter
1 kg onion, slices
3 eggs
white pepper
salt
4 tablespoons sour cream
1 1 teaspoon cumin or 1 teaspoon nutmeg

Preparation

Put flour into a bowl, add sugar, make a dent in the middle where you put the yeast.
Add the sugar and a little of the milk and mix well.
Let the dough rest for 15 minutes (cover bowl with towel).
Add the rest of the milk and mix well again.
Let rest for another 30 minute.
Roll dough and put on a baking plate.
Make a raised edge of the dough.
For the topping: fry the ham in butter.
Add the sliced onions and fry until they are soft and glassy.
Mix eggs with pepper, salt, sour cream and cummin/nutmeg.
Add to the onions.
Put everything ontop of the dough.
Bake for 30 min at 190\u00b0C.