Turn on your Instant Pot and select the sauté function.
Add oil and heat for 1 minute and then add the onion and cook until the onion becomes tender and translucent.
Season beef with salt and pepper and then add to the Instant Pot and brown on all sides.
Add the garlic, Worcestershire sauce, and soy sauce, and then stir in the mushrooms.
Stir in flour being sure to coat the meat and mushrooms evenly.
Pour in beef broth and stir. Be sure to stir well, scraping the bottom of the pot to deglaze it. You don’t want any burnt-on pieces of beef or onions stuck to the bottom of the pot. ***If you are using a non-stick pot, use a silicone or wooden spoon to deglaze the pot.
Close the lid and pressure cook at high pressure for 18 minutes with the valve on “seal.” When the timer beeps, delay the release of pressure for 5 minutes.
Open the lid, stir, and add in the egg noodles and then close the lid and pressure cook on high pressure for 5 minutes with the vent on “seal.”
When the timer beeps, allow pressure to naturally release for 5 minutes. Open the lid and add ½ cup of sour cream and stir.
Video
Notes
What can you substitute for sour cream?When making beef stroganoff, you can use yogurt instead of sour cream if you would prefer. It provides a slightly different flavor but creates the creaminess that you are looking for.What can I substitute for broth?Beef broth can be substituted with water that has been mixed with beef bouillon or beef flavored better than bouillon. Beef stock, watered-down beef gravy, or watered-down au jus can also be used.How do you make beef stroganoff not chewy?If you are using beef stew meat as I did in this recipe, pressure cooking the beef helps to make it tender instead of chewy. Natural release the pressure after cooking the beef to keep it tender.