There will be a lot of liquid in Instant Pot. To speed up the process, pour the onion liquid in a large glass measuring cup and reserve it for later. Caramelize onions by using the "Saute More" function. Stir occasionally. Once all the liquid has evaporated, turn the heat down to "Saute Normal". *Pro Tip: At this point, you will want to stir the onions more frequently to avoid burning. Saute onions until they are deep golden brown. *Note: The whole caramelizing process will take roughly 20 - 28 minutes.