Place the cornstarch on a plate or a shallow bowl.
Cut the steak into 1-inch thick strips, and toss it into the corn starch until it is completely coated and set aside. Discard any remaining cornstarch.
In a heavy-bottomed skillet or Dutch oven, heat the oil over high heat until hot.
dd the strips of steak in a single layer to the hot pan(you may have to do more than one batch.) and cook until browned on both sides. Remove the steak from the pan and set aside.
repeat with any remaining steak.
Add a small amount of beef broth to the pan to scald it, and stir the broth around making sure to scrap any brown bits off the bottom of the pan.
Reduce the heat to medium, and add the remaining beef broth.
Add the broccoli to the pan and bring it to a simmer.
Simmer stirring occasionally until the broccoli is tender, about 10 minutes.
while the broccoli is cooking, combine all the sauce ingredients in a small bowl and whisk.
Once the broccoli is tender, add the steak back to the pan followed by the sauce. And gently simmer until the sauce is thickened and the steak is finished cooking, roughly 10-15 minutes.
Just before serving mix in green onion pieces.
Enjoy!