Cook potatoes and smash. Onion cut into small pieces and add to the potatoes, add the egg and spices and mix everything like dough, which is divided into two equal parts. Chicken fillets cut into chunks. Mushrooms, carrots and pickles also diced (not too finely). Chicken nuggets are smothered in fat, add to it and also vegetables and sauté until ready and add the salt. In a baking dish greased with butter or sunflower oil spread one side of potato base. On it spreads finished stuffing and spread evenly. Top again spread the other side of potatoes. Sprinkle with grated cheese and bake the finished cake in the oven. With the filling can improvise, it may be only with vegetables of your choice.