½ teaspoon crushed red pepper flakes (or more, to taste)
2 tablespoons sesame oil
2 tablespoons cornstarch
¾ cup beef broth
½ cup hoisin sauce
2 tablespoons soy sauce
8 ounces vermicelli (cooked)
½ cup sliced green onions
Instructions
Bring a large pot of lightly salted water to a boil. Add vermicelli and cook according to package directions. Drain and set aside. While the noodles are cooking, slice steak against the grain thinly into strips. In a large wok or skillet heat sesame oil over medium-high heat. Add red pepper flakes, garlic, and ginger and stir fry for 10 seconds. Add the sliced steak and stir fry for about 5 minutes.
Combine cornstarch and beef broth and whisk until smooth. Stir the beef broth mixture, hoisin sauce, and soy sauce into the pan with the steak. Bring to a boil, stirring constantly for about 1 minute or until the mixture is thick and bubbly.
Toss the steak and sauce mixture with the cooked hot noodles. Sprinkle with sliced green onions.