Boil the potatoes. Chop the onions and fry them. Chop the dill. Cut the tomatoes. Cut the potatoes in four and mix with tomatoes, dill, sour cream and fresh milled pepper and salt.

Roll out the pastry and put it in an oven dish. Fry the onions and the mushrooms. Mix the eggs with cream, milk and mustard. Put half of the cheese on top of the pastry, and the tomatoes and the onions and mushrooms on top of that. Pour the milk mixture over and put the rest of the cheese on top. Bake 40 minutes in the oven at 200 degrees Celsius.