Preheat the onion to 425 degrees. Spread sesame seeds on small baking sheet and toast 7-10 minutes, until fragrant, watching them carefully to avoid burning. Meanwhile, break up the noodles on a baking sheet and toast in oven for 5 minutes, toss and toast an additional 3 minutes. Remove seeds and noodles pieces from oven and cool.

In a small bowl, whisk together olive oil, sugar, rice vinegar, soy sauce, sesame oil, salt and pepper until the sugar dissolves. Stir toasted sesame seeds into the dressing. In a large bowl, combine edamame, spinach, cucumber, green onions and toasted noodle pieces. Pour dressing over top and toss to mix. Serve immediately.