Dressing: Place all ingredients into blender and blend until well mixed. there will be little pieces of onion. Pour into samll saucepan and heat gently,. stirring. Do not boil. Let cool and then chill. you should have about 3/4 cup dressing.
In serving bowl combine all vegetables. Chill.
Just before serving, add 1/4 cup dressing and toss to combine.
Taste and add more dressing if you like.
Arrange each portion of salad on a lettuce leaf or red cabbage leaf.