Melted Onions Recipe on Food52 (2024)

FAQs

Can you melt an onion? ›

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.

Melt butter in a small pan and add sliced onion. Cook on medium heat for 15 minutes, stirring. Add sugar and stir through for a further 15 minutes until very dark brown in colour. This recipe is excellent mixed with Red Wine Jus Gravy!

You can use either oil or butter to caramelize onions — but ideally, you use a combination of both! I like to use olive oil, and this cooking fat tolerates heat particularly well. Meanwhile, butter adds a distinctly rich flavor to the caramelized onions.

Once the water is boiling or close to it, put a lid on the pan so the onions can steam. This essentially massively speeds up the process of wilting the onions, which can be the first 15-20 minutes of the sautéing process.

The key to quicker caramelized onions is the ingredient we least expected: water.

No! Onions already contain natural sugars, which is why they're so perfect for caramelizing. This process brings out those sugars to make them more prominent. Adding more sugar would make them too sweet and mess with the flavor.

Sautéing vs caramelizing

Sautéing is about softening and lightly flavoring the onions, while caramelizing is about developing a rich, sweet complexity. Unfortunately, you can't swap one out for the other without changing the flavor profile of your dish.

Why aren't my onions caramelizing? ›

Onions won't begin to caramelize until all the water in them has evaporated, and using salt will speed up that process, Caicedo explains.

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.

Deglazing the pan with water while cooking over higher heat is one of the only ways to speed up caramelized onions without sacrificing too much quality. You can deglaze as much as necessary while keeping the flame higher to brown the onions faster; the key is to add the water every time the onions threaten to burn.

Heat causes them to break down and apart into simpler, sweeter sugars eventually resulting in, well, caramel of a sort. The cell walls also break down allowing the more sulphuric compounds that make onions astringent and spicy to cook off and become less so.

When you cook onions they go through some obvious physical changes. First, they get hot and release moisture, at which point they become slightly translucent. Keep cooking them and they begin to brown and sweeten because their sugars caramelize.

To get the melt-in-your-mouth texture, the onions need to be covered tightly and need a heaping helping of the secret ingredient: time. The combination of the long cook time and securely-wrapped onions will make them fall-apart tender and irresistible.

They can be eaten cooked or raw and are a staple food worldwide. In addition to their flavoring abilities, onions are a rich source of vitamins, minerals, and fiber and offer several health benefits. But these properties can sometimes change depending on whether you cook your onions or eat them raw.