Citrus Parmesan Dressing

1/3 cup  grated Parmesan cheese
Zest and juice of 2 oranges
2 tablespoons chopped shallots
 or minced red onion
½ cup white wine vinegar
1/4 cup extra-virgin olive oil (or half reg. + half lemon oil)
½ teaspoon salt
¼ teaspoon pepper
Place all ingredients in a blender. Blend until smooth. Serve immediately or refrigerate