Wash spinach and dry thoroughly. Combine spinach with onion, bell pepper, carrots and cranberries in a large bowl.

Prepare dressing: Combine all of the ingredients in a jar and seal tightly; shake well. Or, place everything in a mini food processor and blend until smooth. Chill before serving. Dressing can be stored in a jar in the refrigerator for three to four weeks.

At serving time, combine spinach mixture with salad dressing, mandarin oranges, salt and pepper; toss gently to combine. Transfer to a large platter or serving bowl and sprinkle with almonds or pine nuts. Serve immediately.