Place round steak cut into bite size pieces into an electric pressure cooker.
In a small mixing bowl, whisk together beef broth, low sodium soy sauce, minced garlic, brown sugar, and sesame oil. Pour the mixture over the steak in the instant pot.
Seal the instant pot and cook on high pressure for 12 minutes. Perform a quick release after cooking.
In a small bowl, whisk together cornstarch and cold water until smooth.
Switch the instant pot to the sauté setting and stir the cornstarch mixture into the sauce.
Add broccoli cut into bite size pieces and stir well. Place the lid back on the instant pot without sealing it.
Cook on sauté for 3–4 minutes until the broccoli is tender and the sauce has thickened.
Sprinkle with sesame seeds if using, and serve immediately over rice.
Notes
*Store any leftovers in an air tight container in the refrigerator for up to 5 days.