In crockpot, mix dry spaghetti sauce mix with tomato sauce and water. Cut zucchini into 1/2-inch crosswise slices. Peel eggplant; slice thinly, then cut each slice into quarters. Add zucchini, eggplant, green pepper, tomatoes and salt to spaghetti sauce. Cover and cook on LOW for 4 to 6 hours or until vegetables are tender.
Meanwhile, cook spaghetti according to package directions; drain well. When ready to serve, top each serving of spaghetti with vegetable-sauce mixture. Sprinkle with cheese.
Servings: 6