Remove flavor packet from soup mix, and set aside. Crumble noodles.
Bake noodles in a shallow pan at 350° for 10 minutes or until toasted, stirring after 5 minutes. Remove from oven, and cool.
Cook sliced almonds and 3 tablespoons sugar in a small nonstick skillet over medium-low heat, stirring constantly, 5 to 6 minutes or until sugar is dissolved and almonds are evenly coated. Remove almond mixture from heat, and set aside.
Whisk together reserved flavor packet, remaining 2 tablespoons sugar, oil, and next 5 ingredients.
Toss together lettuces, celery, and onions in a bowl. Drizzle with dressing; toss. Add noodles, almond mixture, and oranges; toss. Serve immediately.
Prep: 25 min., Bake: 10 min., Cook: 6 min.