Tofu provides the protein for this one-dish meal. It's a great way to add soy to your diet.
In a 3 1/2- or 4-quart slow cooker whisk together the water and soup. Stir in undrained tomatoes, the celery, carrot, onion, garlic, Italian seasoning, salt, and pepper.
Cover and cook on low-heat setting for 7 to 8 hours or high-heat setting for 3-1/2 to 4 hours.
Gently stir in tofu cubes and spaghetti. Sprinkle each serving with cheese. Makes 6 servings.