Heat the oven to 200C degrees. In a suitable vessel add the flour.Do cow butter into small pieces and add them to the flour. Add water and start to knead until the dough. Take the form of pie and roll out the dough in the form. Put the form in the oven for 10 minutes. Removing the form from the oven (it will be half done). Put him on the ham tomato and leeks should be cut into small pieces or as you decide you. Embroiled in a suitable container egg cream and milk / water. Spray ham, leeks and tomatoes, which are on the ready base. Sprinkle with grated cheese. Put in the oven for 15-20 minutes. * This is for 4 servings.