Step 1

Add onions, butter, salt, and pepper to the container of an Instant Pot or other multi-use pressure cooker and stir to combine.

Step 2

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.

Step 3

Cook over high "Saute" setting, stirring constantly, until onions are deeply golden and caramelized, 3 to 5 minutes.

Step 4

Add white wine and cook down again until wine is evaporated.

Step 5

Remove from heat and store in an airtight container in the refrigerator for up to 1 week.