This easy Italian vinaigrette salad dressing has a lot of ingredients, but it comes together quickly thanks to the use of a blender or food processor. Serve this tossed with mixed greens and bits of blue cheese, or try it in this Italian chopped salad recipe. This vinaigrette will store in the refrigerator up to 6 weeks, or even freeze it for a few months. This makes enough to last quite a while!