Before You Begin
Preheat and prepare your cookware as needed. Cooking times and results may vary depending on your equipment and ingredients.
Make the Sauce
In a small bowl, whisk soy sauce, oyster sauce (if using), brown sugar, cornstarch, and water until completely smooth. Set aside.
Cook the Ground Beef
Heat a large skillet over medium-high heat. Add ground beef and cook for 5–7 minutes, breaking it apart, until fully cooked and no pink remains. Drain excess fat carefully.
Add Garlic
Stir in garlic and cook for 30–60 seconds until fragrant, stirring constantly to prevent browning.
Add Broccoli and Sauce
Add broccoli florets to the skillet. Pour the prepared sauce evenly over the beef and broccoli.
Simmer
Cover and cook for 4–6 minutes, until the broccoli is bright green and tender-crisp and the sauce thickens slightly and coats the beef and broccoli.
Finish
Remove the lid, drizzle sesame oil over the stir-fry, and stir until evenly coated.
Serve
Serve warm, alone or over cooked rice.