Core and slice the apple. You can dip the slices in lemon juice to keep them from browning if you're not serving the salad immediately.
Arrange salad greens on each serving plate. Add grapes, apple slices, walnuts, and cranberries. Scoop chicken salad into the centre. Drizzle with raspberry vinaigrette.
Notes
The ingredients may be prepped ahead of time, but assemble the salad just before serving.
If you're chopping the apples ahead of time, coat them in raspberry vinaigrette or mayonnaise to keep them from browning.