Preheat the oven to 400 degrees F. Make the vinaigrette: Place the ingredients in a small bowl and whisk until emulsified. Slice the beets using a spiralizer. We use and recommend the Paderno World Spiralizer. Spread the beets out on a lined cookie sheet. Drizzle with a little olive oil and sprinkle with the salt and pepper. Roast the beets for 10-13 minutes or until the beets are soft.
Place the beets in a large bowl and pour over the vinaigrette. Stir to evenly coat the beets. Serve immediately while warm or serve at room temperature.