Preheat oven to 350 Sauté onions and ground beef in oil over medium high heat until the onion is soft and the meat is browned.

In a large mixing bowl combine tomato sauce, cabbage, chopped cauliflower, dill, pepper and salt. Add meat mixture and mix all together. Pour mixture into a casserole dish with tight fitting lid that has been sprayed lightly with cooking oil. Cover with lid and place on the middle rack of the pre-heated oven. Bake for 1 hour.

Remove lid and continue baking for another ½ hour or until the cabbage and cauliflower bits are soft and the liquid has all been absorbed.