Boil cabbage until leaves are soft. Cool. Save the boiling liquid. Mix the rest of the ingredients well. Divide mixture into several cabbage leaves. Place in a large pot. Cover cabbage rolls with a mixture of canned tomatoes, tomato sauce and the boiling liquid from the cabbage. Be sure the liquid comes above all cabbage rolls. Cover rolls and liquid with extra cabbage leaves. Cover pot and bake at 350 degrees for 1 1/2 to 2 hours.