The naturally occurring sugars in vegetables can be enhanced through slow cooking.
Onions are an excellent candidate for caramelizing.
And they are more than easy to make.
Spray the inside of a slow cooker with a small amount of oil.
Fill with onions.
Set to low.
Go away for a day or so.
Set to high, return sooner.
Come back to beautiful brown onions, sweet and delicious.
Can be stored in the fridge for weeks.
Add to soups, sandwiches, side dishes, main dishes.
You name it.