Cabbage rolls are a classic comfort food that can be made with a variety of fillings. To make cabbage rolls, blanch cabbage leaves in boiling water until they are soft and pliable. Mix together a filling of ground meat, rice, onions, and herbs. Place a spoonful of filling on each cabbage leaf and roll up tightly. Place the cabbage rolls in a baking dish and pour tomato sauce over them. Bake in the oven until the cabbage is tender and the filling is cooked through. Serve hot with sour cream.