Prep: 10 minutes; Cook: 50 minutes.
1. Heat 2 tablespoons olive oil in a large pot or saucepan over low heat. Add onion, and sauté about 2 to 3 minutes.
2. Add kale and next 6 ingredients. Reduce heat to very low, cover, and simmer 45 minutes, stirring occasionally, until greens and turnip are tender. Uncover, drizzle greens with remaining 2 tablespoons olive oil, and cook 3 minutes. Serve warm.