1 can (14.5 ounces) diced tomatoes with onion and garlic
In a large saucepan, over medium-high heat, bring 5 cups water and soup mix to a boil, stirring occasionally. Stir in kasha and zucchini; partially cover and simmer until kasha is tender, about 10 minutes.
Stir in beans and tomatoes with the liquid; simmer until hot, about 5 minutes. Serve with grated Parmesan cheese, if desired.