Steam the green beans until tender, about 5 minutes. Meanwhile, in a small bowl, combine the lemon juice, mayonnaise, shallots, salt, and pepper. Add the oil in a slow stream, whisking constantly until the vinaigrette is well blended. Toss the cooked beans with the red pepper and enough vinaigrette to coat, about 1/3 cup. Serve warm, with extra vinaigrette on the side, if you like.
nutrition information (per serving):
Photo: Ben Fink