Place beef into the instant pot with 3/4 cup water and one tablespoon soy sauce. Set to high pressure for 20 minutes. Once the instant pot stops counting release the pressure after 5 minutes via quick release.
Drain juice from beef.
Mix together brown sugar, soy sauce, ginger, garlic, and hoisin sauce. Stir well.
Add bell peppers and spring onions to the instant pot and place the pot on saute mode. Stir fry vegetables for about 3 minutes with the beef.
Pour in sauce and cook for another 3 to 5 minutes until it caramelizes around the beef.
Serve with steamed white rice with chives from the spring onions.