Toast the pecans or walnuts.
Chop the apple, celery, spring onions and optional grapes.
Make the dressing by grinding the cashew nuts in a food processor or high powered blender.
Add the water, mustard, vinegar, lemon juice, garlic and seasoning and blend together to make a thick dressing.
Toss the greens with half the dressing.
Add the nuts, apple, celery, spring onions and grapes.
Drizzle with the remaining dressing and serve immediately.
