Potatoes are boiled and mashed cooked. Cool. Sift the flour into a puree, add the soft butter, salt, sugar and dough is kneaded. Sift the flour into a puree, add the soft butter, salt, sugar and dough is kneaded. Roll out the dough between two layers foil. Place in shape (diameter 22-24 cm), covering the walls and bottom. The mold is covered and placed in the refrigerator. Fry onions until golden. Add mushrooms. Add the pepper, which is cut into small cubes and half the grated cheese, salt, spices. Eggs are broken down with the cream. The fridge is removed form and post with baking paper on top is dusted with beans. Bake 5 minutes in a preheated oven at 200 C. Remove from the oven and remove the paper and beans. Pour the mixture of eggs and mushrooms. Top is dusted with grated cheese and bake in preheated oven at 200 ° C about 30-35 minutes. You can add processed cheese with spices, but also can be used ready mashed potatoes.