Preparation Whisk first 8 ingredients in small bowl for dressing. (Can be made 1 day ahead. Refrigerate. Rewhisk before using.) Place sliced onion in medium bowl. Cover with cold water; let stand 30 minutes. Drain well. Place 1/3 cup dressing in another medium bowl. Add apples; toss to coat. Trim off tips of romaine halves, leaving 5-inch lengths. Cut each romaine half lengthwise into 3 wedges. Fan wedges on large platter. Top with red onion slices. Drizzle salad with dressing, then sprinkle with apples and pecans.
Preparation Whisk first 8 ingredients in small bowl for dressing. (Can be made 1 day ahead. Refrigerate. Rewhisk before using.) Place sliced onion in medium bowl. Cover with cold water; let stand 30 minutes. Drain well. Place 1/3 cup dressing in another medium bowl. Add apples; toss to coat. Trim off tips of romaine halves, leaving 5-inch lengths. Cut each romaine half lengthwise into 3 wedges. Fan wedges on large platter. Top with red onion slices. Drizzle salad with dressing, then sprinkle with apples and pecans.