Brown ground beef with chopped onions and chopped garlic. Cook over medium heat for about 10 minutes or until meat is well cooked. Pour off excess fat. Add jarred salsa, cumin, salt and pepper. Cover and simmer in low heat for another 10 minutes until favors blend. Add the zucchini chunks. Cover and cook for about 10 more minutes until zucchini is cooked, but not too soft. Taste and add additional salt and pepper as desired. Serve over steamed brown or white rice. (We used a mix of brown and white jasmine rice).