Jamie Oliver’s Orange Polenta Cake is a gluten-free cake that combines the nutty flavor of ground almonds with the bright, refreshing taste of oranges. The addition of polenta gives the cake a slightly grainy texture, which pairs beautifully with the moistness of the orange syrup. With a subtle sweetness and a bold citrus flavor, this cake is perfect on its own or served with a dollop of yogurt or whipped cream.