You could make that work by making it into a sauce by adding some extra water so it doesn’t cook dry.

If you are using a 3 quart, there’s definitely enough liquid to bring it up to pressure, and it might be enough for a 6-quart.

The easiest way to convert it would be to use the pot in pot method. Put all the ingredients into a large pyrex bowl that fits in your IP. Cover with foil. Add 1 to 2 cups water, the rack that came with your IP. Place the covered bowl on the rack. Cook for 15 minutes on high pressure.

Does anyone have a recommendations for how one might cook this in an electric pressure cooker (such as the Instant Pot), instead of in a slow cooker? Thank you for any advice.

That should work.

Yes, you shouldn’t need to change anything else.

The oil is only used to sauté the onions, so you can dry sauté or sauté in broth to make it oil free.