Mix tomatoes with tomato paste and seeds in a large saucepan. Bring to a boil and simmer for 10 minutes. Brown meat with garlic and onion. Cover cabbage with boiling water and let stand 5 minutes, then drain. Layer cabbage, meat and tomato sauce in a large buttered casserole dish, making 2 or 3 layers. Cover and bake 40 minutes at 350� F until cabbage is tender. Serve each portion with a dollop of sour cream. Makes 6 servings.