Wash, peel and chop the carrots, parsnips and potatoes. I opted to leave the peels on the potatoes, but you can peel them too if you like.
In a large bowl, drizzle a couple tablespoons of olive oil over the veggies and sprinkle with salt.
Mix it well and pour onto a large baking pan.
Bake at 400 degrees for 40-45 minutes or until the veggies are tender.