Preparation Purée first 9 ingredients in processor until smooth. Gradually add olive oil and process until blended. Season dressing to taste with salt and pepper. (Can be prepared 1 day ahead. Cover and refrigerate.) Combine romaine lettuce and next 4 ingredients in large bowl. Toss with enough dressing to coat. Garnish with additional grated Parmesan.
Preparation Purée first 9 ingredients in processor until smooth. Gradually add olive oil and process until blended. Season dressing to taste with salt and pepper. (Can be prepared 1 day ahead. Cover and refrigerate.) Combine romaine lettuce and next 4 ingredients in large bowl. Toss with enough dressing to coat. Garnish with additional grated Parmesan.