Toss carrots and beets with maple syrup and olive oil until coated. Spread in a single layer on a greased baking sheet. Roast at 400F 20-25 minutes or until vegetables are tender. Remove from oven and cool.
Once vegetables are cooled, toss in a large bowl with spinach, almonds, and goat cheese. Set aside for a moment to make the dressing.
In a mason jar with a tight-fitting lid, combine all dressing ingredients and shake several times until smooth. Season with salt and pepper to taste.
Just before serving, drizzle dressing over spinach salad and gently toss to coat. Serve immediately.