Peel the potatoes and cut into cubes. Place in a glass pot, pour 1/3 cup water (enough to cover the bottom) and cook in microwave on full power 8-9 minutes. Cut the leek into in small pieces and stew on low heat in a saucepan with the lid with pre-heated butter. Sprinkle with flour, add the chopped pepper, thyme and salt and diluted with milk. Boil the potatoes are covered with the mixture and sprinkle with grated cheese, chopped dill and breadcrumbs. Ogretenat placed in a pre preheated to a temperature of 200 ° C oven and bake until browned.