Making Beef and Broccoli is straightforward if you follow these simple steps:

1. Prep the Marinade: In a bowl, combine soy sauce, cornstarch, brown sugar, sesame oil, and oyster sauce (if using). Mix until smooth.
2. Marinate the Beef: Add the sliced flank steak to the marinade. Allow it to marinate for at least 10 minutes, letting the flavors penetrate the meat.
3. Blanch the Broccoli: In a large pot of boiling water, blanch the broccoli florets for about 2 minutes until bright green and slightly tender. Remove and set aside.
4. Stir-Fry the Beef: Heat 1 tablespoon of vegetable oil in a large skillet or wok over medium-high heat. Add the marinated beef, ensuring not to overcrowd the pan. Cook for about 3-4 minutes or until browned. Remove and set aside.
5. Sauté Garlic and Ginger: In the same skillet, add the remaining tablespoon of oil, then sauté the minced garlic and ginger for about 30 seconds until fragrant.
6. Combine Everything: Add the blanched broccoli and cooked beef back to the skillet. Pour the remaining marinade over the mixture and stir thoroughly to combine.
7. Cook Together: Allow everything to cook together for an additional 2-3 minutes, letting the sauce thicken and the flavors meld.
8. Serve: Remove from heat and serve immediately over cooked rice or quinoa.

Following these steps will lead you to a plate of sizzling Beef and Broccoli that’s as delightful as it is nutritious.