Wash the thyme, shake dry. Pluck the leaves from the stalks and chop them, except for a little to garnish. Cut ##tomatoes## into very thin strips, put something aside for garnishing.
Cut the cheese into cubes. Peel and finely chop the onion. Knead minced meat, egg, diced onion, breadcrumbs, milk, ##thyme## and tomatoes. Season with salt and pepper. Carefully knead in cheese cubes.
Shape into meatballs. Heat the oil in a pan and fry the meatballs for about 10 minutes, turning them over. Arrange and garnish with thyme, tomatoes and sheep's cheese.