Oats, radicchio, and ever-so-sweet roasted grapes breathe new life into this staid classic salad. Boasting a chewy texture and nutty flavour, oat groats are the whole grain from which other types of oats are made. To lighten things up, a sweet vinaigrette replaces the old-fashioned mayonnaise dressing. This salad holds up well in the refrigerator, making it a great option for healthy work week lunches.