Beef stroganoff is one of those comfort meals that feels fancy until you remember it is basically: beef + mushrooms + a creamy tangy sauce + noodles. That is my kind of math.
This Instant Pot version keeps the vibe classic, but it trims the drama. We sear the beef for flavor, deglaze so the pot stays happy, then pressure cook just long enough to get everything tender and cozy. The key move is at the end: sour cream and Dijon go in off-heat so your sauce stays silky and does not split.
You can serve this over egg noodles cooked on the stove (my preferred method for the best texture), or you can do an in-pot noodle option if you want fewer dishes. I am not here to judge your sink situation.

