Tossed Salad with Spinach Dressing

4 cups cauliflowerets
4 cups torn lettuce
1 small onion, sliced and separated into rings
1 jar (3-1/2 ounces) stuffed olives, drained
1/4 cup crumbled blue cheese

Dressing
1/3 cup finely chopped fresh spinach
1/4 cup vegetable oil
2 tablespoons finely chopped onion
1 tablespoon plus 1 teaspoon lemon juice
2 teaspoons minced fresh parsley
3/4 teaspoon sugar

In a bowl, combine the cauliflower, lettuce, onion, olives and blue cheese. In a jar with tight-fitting lid, combine the dressing ingredients; shake well. Pour over salad and toss to coat; serve immediately. Makes 8 servings.