Instant Pot Caramelized Onions

2 pounds yellow onions, sliced 1/2-inch-thick (8 cups)

2 tablespoons unsalted butter, cut into small pieces

Kosher salt and freshly ground black pepper

Add onions, butter, 2 teaspoons salt, and 1/2 teaspoon pepper to the bowl of a multicooker; stir to combine.  Secure the lid and adjust vent to seal.  Cook on high "Pressure Cook" setting for 5 minutes.  Once cycle is complete, immediately release pressure.  Carefully remove lid.

Strain onions and discard excess liquid.  Return onions to multicooker.  Cook over high "Saute" setting, stirring constantly, until onions are deeply golden and caramelized, 3 to 5 minutes.  Store in an airtight container in the refrigerator for up to 1 week.

Makes 2 1/2 cups.

From MarthaStewart.com