So you finished the holidays, everything put away, and now you have too much of everything including the onions you forgot to use. You could make onion soup, but if you are married to a man who doesn’t really care for it, you have to think of something else before they go bad.
Simple and easy way to use them up that doesn’t include kimchi or pickling. Slice them as thinly as possible and put into a pot with about a tablespoon of butter and a tablespoon of a neutral oil. Add about 1/2 cup water and a tablespoon of balsamic vinegar. Wait on the salt and pepper, their time will come later. Put the pot on a medium low heat and let the water melt the onions without browning them. Eventually all the water will dissipate (thank you for this great trick Jacques Pepin), and the onions will begin to caramelize a bit. Don’t let them brown. Taste for salt and pepper at this point and season to your liking.
Let them cool, put them in a jar, and serve with sandwiches (for the pesky, non onion soup liking hubby) or on toast with or without avocado, on eggs, on burgers, or however you want. Chop and mix with sour cream and make a grown up version of onion dip to serve with chips (Super Bowl coming!). Takes all of 15-20 minutes to make and works with any color onion. Freeze for later works too!