Rhubarb is probably best known for its supporting role in strawberry-rhubarb pie. But this fascinating fruit takes on a new role in our Rhubarb Brie Chicken. Brie is the star of the show, rounding out the spices and tart rhubarb tones and unifying the flavors for a rich, mellow sauce. Tart rhubarb and sharp onions become sweet as they simmer in the sauce, which benefits from the Brie’s creamy goodness. The sauce is a wonderful complement to the blackened chicken, both in color and taste.