Preheat oven to 400 degrees. Dice turnips into ½-inch cubes and toss with olive oil. Season with salt and pepper and roast until tender, about 30 minutes. In a large skillet over medium heat, cook bacon until crispy. Using a slotted spoon, remove bacon to a paper towel-lined plate and set aside. Remove half the bacon fat from skillet. Add onions to skillet and cook until soft. Add garlic and greens and cook, stirring occasionally, for about 4 minutes. Chop bacon. Stir in vinegar, stock, and bacon. Cover pan and cook 5 minutes more. Season with salt and pepper, fold in roasted turnips, and serve.
From Move Over, Turkey.