This Instant Pot colcannon recipe is easy, rustic, and comforting. The perfect side dish for St. Patrick's Day or when you want to jazz up your mashed potatoes!
Add the butter and oil to the Instant Pot. Sauté the onion for 2-3 minutes, then add the cabbage and continue to cook until it starts to wilt (another few minutes).
Add the potatoes and water to the Instant Pot. Close the lid and make sure the valve is on "sealing". Cook on high pressure for 5 minutes.
Carefully do a quick pressure release. Test to make sure the potatoes are done by inserting a knife. If they're not done, put the lid back on and cook them on high pressure for another couple minutes.
You can mash the potatoes right in the inner pot on your counter (I don't like to mash them with the inner pot in the pressure cooker in case I damage the heating element). Add the cream, salt & pepper (I'm pretty generous), and chives. Mash until the colcannon is the consistency you like. Serve with butter on top.