Peel and cut up vegetables.
Set Instant Pot to saute setting. Add cut up beef or chicken and onions. Cook for 5 minutes until meat is browned.
Add all other ingredients. Lock lid in place and set Instant Pot to high heat setting and set timer for 35 minutes. Make sure the valve is set to "pressure"
After Instant Pot timer is done, let pot naturally release. Or you can manually release the pressure by turning the pressure value to "pressure release" and let steam come out. Be sure to put a cloth over the release valve to catch any hot liquid that can be released.
If you want stew thicker, put cornstarch in a small bowl with 1/2 cup water, mix together and add to pot. Stir until liquid is thicker.
Serve! You can serve your stew plain, or add toppings such as cheese, sour cream, parsley or chives. Serve with a warm baguette.