Preparation Whisk first 9 ingredients in medium bowl to blend. Season dressing to taste with salt and pepper. Cook asparagus in saucepan of boiling salted water until crisp-tender, about 3 minutes. Drain. Transfer to bowl of ice water; cool. Drain. (Dressing and asparagus can be made 1 day ahead. Cover; chill.) Place lettuce in large bowl. Toss with enough dressing to coat. Mound lettuce on plates. Top with crab. Garnish with asparagus, tomatoes, eggs and lemon. Pass remaining dressing separately.
Preparation Whisk first 9 ingredients in medium bowl to blend. Season dressing to taste with salt and pepper. Cook asparagus in saucepan of boiling salted water until crisp-tender, about 3 minutes. Drain. Transfer to bowl of ice water; cool. Drain. (Dressing and asparagus can be made 1 day ahead. Cover; chill.) Place lettuce in large bowl. Toss with enough dressing to coat. Mound lettuce on plates. Top with crab. Garnish with asparagus, tomatoes, eggs and lemon. Pass remaining dressing separately.