Instant Pot Mongolian Beef is a very easy and delicious meal you can make in just under 30 minutes.
Add the oil to the hot Instant Pot, once the oil is hot, add the beef and sauté for 2-3 minutes, stirring a few times. If needed brown the beef in batches, you don't want to add too much as it will start releasing juice and it won't brown well.
Note: You can also skip browning the beef and just add it to the pot!
If bits of beef stuck to the pot, add 1/2 cup water and deglaze the pot. Using a wooden spoon scrape the bottom of the pot. You can discard that liquid if wanted.
Add the rest of the ingredients to the pot: minced garlic, minced ginger, lite soy sauce, brown sugar, water, rice vinegar, and red pepper flakes. You can add less sugar, based on your taste and preference.
Close lid and pressure cook at High Pressure for 8 minutes + 10 minutes Natural Release. Turn off the heat. Release the remaining pressure after the 10 mins NPR. Open the lid.