Place the potatoes and green beans in a microwave safe (2 quart) steamer basket with bowl underneath. Cover and microwave on high for 3 min. Let stand for 2 min.
Add onion and continue to microwave on high for one minute more. Let stand for 1 minute.
Discard water and empty veggies into the bowl. Toss with the tomato, parsley, olive oil, butter granules and paprika. Serve immediately.