Riesling Onion Soup With Herbed Croutons might be just the main course you are searching for. One portion of this dish contains around 19g of protein, 26g of fat, and a total of 486 calories. This recipe serves 6. This recipe covers 17% of your daily requirements of vitamins and minerals. It will be a hit at your Autumn event. If you have butter, tarragon leaves, flour, and a few other ingredients on hand, you can make it. To use up the riesling you could follow this main course with the Late-Harvest Riesling Sorbet with Berries as a dessert.