Season beef with Kosher salt.
Heat a nonstick skillet over medium high heat until hot.
Sear beef for 1 minute on each side, then add broccoli and Momofuku Sweet & Savory Korean BBQ Sauce.
Stir-fry for about 2 minutes, until broccoli is softened, adding more Momofuku Sweet & Savory Korean BBQ Sauce, as needed.
To serve, top with scallions and sesame seeds, if desired.
