1. Cut broccoli into chunks and steam in microwave or stove top until tender. Set aside. 2. Add beef, oil, onion and garlic in the pot and saute until meat is brown on all sides and onion is translucent. 3. Season with salt and pepper. 4. Add broth, soy sauce and brown sugar and mix well. 5. Place the lid on the pressure cooker and seal shut. Close the pressure release valve. Set the instant pot to manual, high pressure for 10 minutes. 6. When cooking is complete, quick release the steam and open the pot. 7. Stir in broccoli and saute. When mixture begins to bubble, add the cornstarch slurry to thicken. 8. Serve over white rice and top with sesame seeds.