Preheat the oven to 400 degrees F.
In a small bowl, whisk together the sugar and cinnamon.
In another bowl, toss the plums, apricots, vanilla extract, and orange juice together. In a roasting pan or oven-proof baking dish, arrange the fruit cut-side up pouring any extra juice in the baking dish. Sprinkle evenly with the cinnamon-sugar mixture.
Roast for 15 to 20 minutes or until the fruit is fork tender.
Cook's Note: Fruit should be ripe, yet still firm. Serving Suggestion: Serve the roasted fruit over vanilla bean ice cream, accompanied by a shortbread cookie. Alternatively, serve fruit with fresh whipped cream or creme fraiche and use it as a filling or topping for crepes.