Thai Beef Salad

1 lb. beef flank steak, seasoned with kosher salt and pepper
1Tbsp. low-sodium soy sauce
3 1/2 oz. dry rice-stick noodles
6 cups chopped salad greens
1 cucumber, sliced into half-moons (2 cups)
1/4 cup chopped scallions
2 Tbsp. chopped fresh cilantro leaves
2 Tbsp. chopped fresh mint leaves
Juice of 4 lime
1/4 cup fish sauce
1/4 cup toasted sesame oil
1/4 cup chili garlic sauce
4 tsp. sugar
Diced red bell pepper

Coat a nonstick skillet with cooking spray. Cook steak over medium-high heat 6 minutes per side for medium. Add soy sauce; cook 1 minute. Remove meat, tent with foil, and let it rest 5 minutes. Thinly slice steak.
Boil noodles according to package directions; drain and set aside.
Combine steak, greens, cucumber, scallions, cilantro, and mint. Whisk together lime juice, fish sauce, sesame oil, chili garlic sauce, and sugar until sugar is dissolved; toss one-third of the dressing with salad.
Serve salad atop noodles with extra dressing on the side; garnish with diced bell pepper.