Remove the lid from the Instant Pot and hit “Saute”. Add the olive oil. When the oil is good and hot, add the onion and saute until tender. Push “Keep Warm/Cancel”.
When the Instant Pot signals it’s done, open the vent with care to release the steam. Once the steam has vented, open the pot, add the chard leaves, stir, and cover the pot. Leave it for 4 minutes.
Serve over cooked whole grain spaghetti, brown rice, or polenta with Parmesan cheese grated over the top.