Chinese Beef Flat Noodles

¾ pound flank steak
2 cups bean sprouts
3 green onion stalks
4 tablespoons oil for stir-frying, or as needed
Fresh flat rice noodles

Marinade:
1 tablespoon soy sauce
1 ½ teaspoons cornstarch

Sauce:
1/4 cup oyster sauce
4 tablespoons dark soy sauce
1/2 cup beef broth
2 teaspoons granulated sugar
1 teaspoon garlic powder
1 teaspoon onion powder
1 teaspoon ginger powder
Pepper to taste

PREPARATION:
Cut the beef across the grain into thin strips. Add the marinade ingredients. Marinate the beef for 20 minutes. While the beef is marinating, prepare the remaining ingredients.

Place desired amount of noodles in microwave until softened (about 30-60 seconds). Pull apart noodles and set aside.

In a small bowl, combine the oyster sauce, dark soy sauce, beef broth, sugar, and powders. Set aside. Heat the wok over medium-high to high heat. Add 2 tablespoons oil. Add the beef. Brown briefly until it changes color and is almost cooked. Set aside.

Add 2 tablespoons oil to the wok. When the oil is hot, add the sauce mixture and noodles. Cook for about 2 minutes. Stir-fry until fragrant adding the sprouts, & scallions, and return the beef to the pan. Mix thoroughly and serve hot.