On Instant Pot, press Saute and wait until display says Hot. Takes 3-5 mins. Swirl oil to coat if cooking ground chicken or turkey. No need for oil if cooking with ground beef.
Add ground meat of choice and cook for about 5 minutes, constantly breaking into small pieces and stirring. Add onion and garlic half way through.
Add broth, thyme, salt, pepper and stir to deglaze the pot if you see burnt bits on the bottom.
Press Cancel and add mushrooms and pasta. Stir.
Close the lid and move pressure valve to Sealing, and press Pressure Cook on High for 5 minutes.
Release pressure using Quick Release method - turn pressure valve to Venting. Pasta might appear a bit undercooked only on top, don't worry.
Add 1 cup yogurt and 1 cup milk, stir, cover and let stroganoff sit for 10 minutes to create the sauce.
Open the lid and adjust thickness to taste with more milk and/or yogurt, if desired.
Sprinkle with parsley, stir and serve warm.
Notes
Store: Refrigerate leftovers for up to 3 days, in inner pot or airtight container. Reheat with a splash of milk or broth right in inner pot or other small pot on the stove. Simmer on low while stirring a few times and until warmed through.
Freeze: Pasta does not freeze well.
Can I double the recipe? If you have 6 quart or less Instant Pot, you can't be cause there is not enough room. Cook in 2 batches if need to. With 8 quart pressure cooker you can do 1.5 times the recipe. Same cooking time.