Winter salads are a beautiful thing, and this one is no exception. Bitter radicchio and endive are pared with sweet tart apples and oranges, toasty walnuts, and pungent gorgonzola. Topped with a mustard maple vinaigrette, this salad is a showpiece, rather than a side dish.
I love La Tourangelle brand toasted walnut oil and I use it frequently in my salad dressings. Look for it in specialty grocers or online. If you can't find it or can't eat nuts, swap it for good quality virgin olive oil.