Make cream sauce: Heat oil in a small saucepan over medium heat. Add scallion and saute until tender. Add tomato and basil. Add chardonnay and cook until liquid is reduced by half. Add heavy cream, reduce the heat, and simmer until the desired thickness is reached. Keep warm until ready to serve.
After you have started the sauce, bake the fillet: place butter, chardonnay, and verjus in a baking pan. Season fish with salt and pepper and place in pan. Bake for 5 to 7 minutes, or until fish is cooked through; the fish should be opaque throughout and a knife should slide in easily.
Place fillets on a serving plate and spoon over the sauce. Serve with a fresh crusty baguette and a crisp green salad.
*Verjus is unfermented grape juice.
This recipe was provided by a chef, restaurant or culinary professional. It has not been tested for home use.