Preparation Bring large pot of salted water to boil. Add potatoes, rutabagas and parsnips. Boil until vegetables are tender, about 30 minutes. Drain well. Return vegetables to same pot. Mash until coarse puree forms. Mix in 3 tablespoons olive oil. Season vegetables to taste with salt and pepper. (Vegetable mash can be prepared 2 hours ahead. Let stand at room temperature. Rewarm over low heat, stirring frequently.) Transfer vegetables to bowl and serve.
Preparation Bring large pot of salted water to boil. Add potatoes, rutabagas and parsnips. Boil until vegetables are tender, about 30 minutes. Drain well. Return vegetables to same pot. Mash until coarse puree forms. Mix in 3 tablespoons olive oil. Season vegetables to taste with salt and pepper. (Vegetable mash can be prepared 2 hours ahead. Let stand at room temperature. Rewarm over low heat, stirring frequently.) Transfer vegetables to bowl and serve.