Start with about 2 – 2 ½ lbs of mixed root vegetables. Preheat oven. Peel any vegetable whose skin you don't want to eat. Make sure to cut the vegetables in pieces of similar size to help ensure more even cooking.
Place vegetables in a single layer in a rimmed baking dish, then drizzle with olive oil, Kosher salt, and black pepper. Cook in a preheated oven. Toss the veggies, then return to oven and cook.
As soon as the vegetables come out of the oven, drizzle with a couple tablespoons of balsamic vinegar. Give one final toss, then plate the veggies.
Just before serving, add creamy goat cheese and a sprinkle of flaky sea salt. Enjoy immediately or at room temperature!