Preheat oven to 400 degrees F.
Peel beets using a sharp knife (optional. Feel free to simply scrub the outside thoroughly before cutting), then cut into cubes.
Bake for 35-40 minutes, flipping halfway through.
Once done, let cool, then add to large bowl with arugula, walnuts, goat cheese, olive oil, salt and pepper. Toss, then serve!