Discard seasoning from ramen noodles or save for another use. Break noodles into small pieces. In a large skillet, cook noodles and walnuts in butter over medium heat 8-10 minutes or til golden. Cool
For dressing, in a small bowl, whisk the sugar, oil, vinegar and soy sauce. Just before serving combine the romaine, onions, strawberries and noodle mixture in a large bowl. Drizzle with dressing and toss gently.