Place the steak in an electric pressure cooker. In a small mixing bowl, whisk together the beef broth, soy sauce, minced garlic, brown sugar and sesame oil. Pour this mixture on top of the steak in the instant pot.
Seal the instant pot and cook on high pressure for 12 minutes. Do a quick release to release the pressure from the electric pressure cooker after this time.
Whisk together the cornstarch and cold water in a small mixing bowl. Stir this mixture into the instant pot and switch the instant pot to the sauté setting.
Then stir in the broccoli and put the lid back on the instant pot but do not pressure. Cook on sauté for 3-4 minutes until the broccoli is tender and the sauce has thickened.
Sprinkle with sesame seeds and serve immediately over rice.
Notes
*Store any leftovers in an air tight container in the refrigerator for up to 5 days.