Melted Onions Recipe on Food52 (2024)

FAQs

How do you melt onions? ›

Melt the butter in the stockpot over medium-low heat. Add the sliced onions. Keep your eye on the onions and stir often at the beginning to allow all the slices to have contact with the bottom of the pot so they start to release their liquid. In about 45 minutes they should have released a good amount of liquid.

Kenji Lopez-Alt put together a “quicker” method that, he claimed, made caramelized onions in 15 minutes, or about a third of the time. The trick, according to Kenji, is that you use a higher heat, but regularly deglaze with water, so the onions don't burn.

Onions lose their bite and melt in your mouth when they're sliced and roasted with butter and fresh herbs and then tenderized further by braising in broth. Serve alongside roasted chicken or cook them in vegetable broth for an easy, elegant vegetarian side dish.

Our Test Kitchen likes to use butter when caramelizing onions, as it offers the richest flavor. If you avoid dairy or don't have butter, you can caramelize onions in other fat such as margarine or olive oil. Add the onion slices. It's okay if they overlap a bit here because they'll shrink as they cook down.

While you can make caramelized onions with only one of either butter or oil, the best result will be if you use a bit of both. If you have to choose between oil or butter, choose a high quality oil (extra virgin olive oil or avocado oil).

Simply put, caramelized onions aren't quick. It takes at least 45 minutes (and often over an hour) over low heat for the natural sugars in the onions to caramelize. Still, the time is totally worth it. Packed with irresistible umami flavor, caramelized onions add complexity to all sorts of savory dishes.

A few reasons could be that you sliced them too thick or too thin. You haven't cooked them long enough. Your heat isn't at the right temp, use between medium and medium-low. Adding too many onions at once can actually cause them to steam because of too much moisture, instead of caramelizing.

Why add vinegar to caramelize onions? ›

Tip: the vinegar serves to deglaze the pan, adds acidity, and brings this recipe together by boosting the tangy and savory flavors of the caramelized onions. If the onions stick to the pan, that's fine.

You can use any kind of onion, but I prefer yellow onions because they have the best flavor balance. Sweeter onion varieties generally caramelize best because they have a higher sugar content, but again, any onion will work (including red onions).

Around 30 Minutes: Onions should be light blonde in color and starting to become jammy. More fond is starting to build up, but it should still be fairly easy to scrape it up with the evaporating liquid from the onions. Around 40 Minutes: Onions are golden and starting to smell very caramelized.

Salting caramelized onions is like the icing on the cake. They must have salt but don't make the mistake of salting the onions too early. Instead, salt them at the very end of the recipe. Salt makes the onions release moisture which can slow down the caramelization.

To soften the taste of raw onions, slice them thinly or cut them into larger chunks and soak them in very cold water for about 15 minutes. This will soften the taste, making them ideally suited for a salad.

Instead of spending 15 minutes trying to soften onions in a pan (only to scorch them!), try this microwave method. Pop chopped or sliced onions in a bowl, add a spoonful of water, cover with a plate and microwave on high for 3-4min. Carefully remove (the bowl will be very hot) and uncover.

Yes, you can cook onions in the microwave without any oil or butter. Onions naturally contain a high water content, so they will steam and cook in their own moisture. This method is a healthier option and can still yield deliciously cooked onions.

Slice the onions to about ½ inch thick, try to make them the same size so they cook evenly. Melt 4 TBS butter in a pot over medium heat and add the sliced onions. Cover partially and let them simmer, soften, and reduce for about 25 minutes. Stir every few minutes and reduce heat if they start cooking too quickly.