Prepare the beef: In a small bowl, combine cornstarch, soy sauce, garlic powder, and ginger powder. Add beef and toss to coat.

Heat the oil: Heat vegetable oil in a large skillet over high heat.

Cook the beef: Add beef to the hot skillet and cook until browned and cooked through. Remove from skillet and set aside.

Stir-fry vegetables: Add broccoli and red bell pepper to the skillet. Stir-fry for 2-3 minutes, or until vegetables are tender-crisp.

Make the sauce: In a small bowl, combine beef broth, oyster sauce, and sesame oil.

Combine ingredients: Return beef to the skillet and pour the sauce over the beef and vegetables. Stir-fry until the sauce is heated through and coats the ingredients.

Serve: Serve immediately over cooked rice.

Tips:

For a spicier stir-fry, add a pinch of red pepper flakes or Sriracha sauce.

You can substitute other vegetables, such as carrots, snow peas, or mushrooms.

Serve with your favorite stir-fry sauce or a side of steamed vegetables.

Enjoy your delicious beef and broccoli stir fry!