Mongolian Beef Noodles (Fast, Saucy Dinner) - Quickie Recipe

Ingredients

• 1 lb (450 g) flank steak or sirloin, thinly sliced against the grain
• 2 tablespoons cornstarch
• 1/2 teaspoon kosher salt
• 1/4 teaspoon black pepper
• 2 tablespoons neutral oil, divided
• 1/3 cup (80 ml) low-sodium soy sauce
• 1/3 cup (80 ml) low-sodium beef broth
• 3 tablespoons packed brown sugar
• 2 tablespoons hoisin sauce
• 1 tablespoon rice vinegar
• 1 teaspoon toasted sesame oil
• 1 teaspoon cornstarch
• 1/4 teaspoon red pepper flakes, optional
• 10 oz (285 g) lo mein noodles
• 3 cloves garlic, minced
• 1 tablespoon finely grated fresh ginger
• 1 medium carrot, cut into thin matchsticks
• 4 green onions, white and green parts separated, sliced
• 1 tablespoon toasted sesame seeds, for serving