Ingredients

• 1/4 cup soy sauce
• 1 tablespoon hoisin sauce
• 1 tablespoon sesame oil
• 2 teaspoons white sugar
• 1 tablespoon minced garlic
• 1 tablespoon red pepper flakes (optional)
• 1 pound beef flank steak, thinly sliced
• 1 tablespoon peanut oil
• 2 large green onions, thinly sliced

Instructions

1. Whisk together soy sauce, hoisin sauce, sesame oil, sugar, garlic, and red pepper flakes in a bowl. Toss beef with marinade, cover, and refrigerate 1 hour to overnight.
2. Heat peanut oil in a wok or large, nonstick skillet over high heat. Add the green onions, and cook for 5 to 10 seconds before stirring in the beef. Cook and stir until the beef is no longer pink and is beginning to brown, about 5 minutes.