2 1/2 lbs. zucchini, cut in 1 inch pieces
1 1/2 lbs. onion, cut in 1 inch pieces
2 tbsp. butter or olive oil
2 (16 oz.) cans stewed tomatoes
30 oz. vegetable stock or chicken broth
2 tbsp. parsley flakes
1 tsp. salt
1/2 tsp. pepper
1/4 tsp. garlic powder
1 tsp. soy sauce

Saute onion and zucchini in butter until just tender, about 5 minutes. Add rest of ingredients and simmer for one hour.