Slice the ends off the beet so it's flat on both ends and peel it. Set the Inspiralizer to Blade D and spiralize the beet. Cut the noodles into spaghetti length (if desired).
Place the apple (short end on the center corer of the Inspiralizer) and run it through the machine. Add both noodles to a large bowl.
Whisk together the remaining ingredients (minus candied nuts) and pour over noodles. Toss with tongs until evenly coated. Refrigerate for at least 30 minutes.
When ready to serve, transfer noodles to plates and garnish with candied nuts.