Brown ground beef in a 12” skillet.
Add onion and cook until onion is soft.
Add water, rice, seasoning mix, corn, tomatoes and sliced zucchini.
Bring to a boil, cover and cook over medium heat 5-10 minutes until zucchini is tender.
Sprinkle with cheddar cheese, cover, and remove from heat.
Let sit until cheese melts, then serve.