In a large skillet melt butter over high heat. Add onions, reduce heat and saute for about 5 minutes or somewhat soft.
Add rest of vegetables, 1 teaspoon salt and 1 teaspoon sugar. Saute for a minute, cover skillet lower heat and simmer for 5 minutes until tender, but still crisp.
Uncover skillet, raise heat, add lime juice and evaporate all liquid until vegetables are slightly syrupy and glazed. Adjust the seasoning if necessary.
Recipe Courtesy of �Michelle Urvater