Finish your next steak dinner with this light-as-air Italian custard and a mix of your favorite fresh berries. Raspberries, blueberries, and strawberries balance well with the sweet Marsala wine in the custard. And at less than 200 calories, the zabaglione will soothe your sweet tooth without filling you up.
Combine first 4 ingredients in top of a double boiler, stirring with a whisk. Cook over simmering water, whisking constantly, about 7 minutes or until a thermometer registers 160°. Serve over berries. Top each serving with whipped topping.