This seems like a lot of onions, but I like to make extra because they can be kept in the freezer for 6 months.
6 T butter
6 pounds Vidalia Onions, sliced
½ tsp baking soda
Salt and pepper to taste
Pre heat your instant pot. And when hot, include the butter to melt
Add onion and baking soda and sauté until the onions begin to soften.
Salt and pepper to taste.
Close the lid and pressure cook for 10 minutes.
After 10 minutes do a quick pressure release and open the lid.