1. Meanwhile, wrap the beets well with foil or put into a pan and cover well. Bake at 400 degrees Fahrenheit (200 degrees Celsius) for one hour.
2. Toss the sliced zucchini in the other half of the marinade and lay out on a baking sheet. Let roast for about 20 minutes or until edges start turning brown.
3. Zest one orange and set aside for later. Peel away two oranges and slice the fruit.