2tablespoonsall-purpose flour (optional, for thickening)
to tasteSalt and pepper
8ozegg noodles
for garnishFresh parsley
Instructions
Set your Instant Pot to 'Sauté' mode. Add vegetable oil and allow it to heat up. Once hot, add the beef pieces in a single layer and season with salt and pepper. Sear until browned on all sides, about 4-5 minutes. Remove the beef and set aside.
In the same pot, add the chopped onion. Sauté for about 2-3 minutes until softened. Add the minced garlic and sliced mushrooms, cooking for another 2-3 minutes until the mushrooms are tender.
Pour in the beef broth, scraping up any browned bits from the bottom of the pot. Stir in the Worcestershire sauce, Dijon mustard, and dried thyme. Return the beef to the pot and stir to combine.
Close the Instant Pot lid and make sure the vent is sealed. Select 'Manual' or 'Pressure Cook' mode and set the timer for 15 minutes on high pressure.
Once the cooking time is complete, allow the pressure to release naturally for about 5 minutes, then carefully switch to quick release to let out the remaining pressure.
In a small bowl, mix the sour cream and flour (if using) until smooth. Stir this mixture into the beef mixture in the pot. Select 'Sauté' mode again and stir until the sauce thickens, about 2-3 minutes. Adjust seasoning with salt and pepper as needed.
While the sauce is thickening, prepare the egg noodles according to package instructions. You could also add the noodles directly to the beef mixture with enough broth and cook on high pressure for an additional 4 minutes, followed by quick release.
Once done, serve the beef stroganoff over the cooked egg noodles and garnish with chopped fresh parsley.
Notes
For a thicker sauce, add flour to the sour cream mixture.