Caramelized onions are onions which might be slowly cooked over low warmth till they turn out to be gentle, golden brown, and naturally candy. Whereas they do take some endurance to prepare dinner low and gradual, they’re a type of easy components that may fully remodel a meal.
On this information, I’ll present you precisely how one can caramelize onions on the stovetop and share my greatest suggestions for getting completely golden, flavorful onions each time. I like making an enormous batch to maintain available for burgers, sandwiches, salads, grain bowls, and extra all through the week!

Right here’s why I like making a batch of caramelized onions:
Good for meal prep: Make an enormous batch and use them all through the week on all your favourite sides and mains.
Simply 3 easy components: All you want are onions, olive oil, and salt to create unimaginable taste.
Naturally candy and savory: Sluggish cooking brings out the onions’ pure sugars, creating wealthy taste with out including any sweeteners.
You need to use any kind of onion to make caramelized onions, however every kind of onion has a barely completely different taste and degree of sweetness:
- Yellow onions: These are my go-to selection. They’re the proper steadiness of savory and candy, and their taste turns into richer as they prepare dinner.
- Candy onions: Candy onions, like Vidalia onions, include extra pure sugars (glucose and fructose) than different varieties. They caramelize properly and develop an excellent sweeter taste, making them an important possibility for burgers and sandwiches.
- White onions: White onions have a sharper, extra pungent taste when uncooked, however they mellow considerably throughout cooking. They have a tendency to interrupt down a bit sooner than yellow onions, so keep watch over them as they caramelize.
- Purple onions: As they prepare dinner, they develop a light, candy taste. Should you’re utilizing them for the visible impact, they lose a lot of their vibrant purple coloration as they prepare dinner. Should you love purple onions, strive them pickled, or add them to my Pineapple Slaw or Purple Potato Salad.
The way to Slice Onions
For the most effective caramelized onions, slice the onions into strips about ¼- to ½-inch thick. Too-thinly sliced onions can break down and turn out to be mushy throughout an extended cooking course of. Thicker slices maintain their texture higher.
I additionally advocate conserving the slices as uniform as attainable to make sure even cooking. A pointy knife works nice, however a mandoline could make fast work of bigger batches.
For the most effective texture, slice the onions from root to tip as an alternative of throughout the center. Root-to-tip slices maintain their form higher as they prepare dinner as a result of the onion fibers keep intact.

The way to Make Caramelized Onions
Caramelized onions aren’t troublesome to make, however they do require endurance. The bottom line is cooking them low and gradual. As they prepare dinner, the onions launch moisture, soften, shrink, and finally flip a wealthy golden brown coloration.
Step 1: Cook dinner the Onions Low and Sluggish
Warmth the olive oil in a big skillet over low warmth and add the sliced onions. Toss to coat them with the oil, then prepare dinner slowly, stirring sometimes. Throughout this stage, the onions will start releasing moisture and softening. Don’t rush the method! Rising the warmth may cause the onions to burn earlier than they’ve an opportunity to correctly caramelize.
Step 2: Add Salt and Proceed Cooking
After about Half-hour, stir within the sea salt. I don’t add salt instantly to maintain the onions from releasing an excessive amount of moisture too early within the cooking course of. This helps them soften regularly earlier than they start browning and creating deeper taste.
Step 3: Let the Onions Caramelize
Proceed cooking the onions for an additional 20 to Half-hour, stirring sometimes. As extra moisture evaporates, the onions will start to tackle a golden brown coloration and develop that signature candy, wealthy taste. You’ll discover them changing into jammy as they proceed to prepare dinner down.
Step 4: End and Serve
The onions are finished once they’re deeply golden brown, very gentle, and considerably lowered in quantity. They need to have a silky, jam-like texture with a wealthy, barely candy aroma. It’s best to have a deeply caramelized taste with no harsh uncooked onion chew remaining. Take away them from the warmth and serve instantly, or allow them to cool earlier than storing for later.
A couple of small changes could make an enormous distinction in how your caramelized onions prove:
- Don’t slice too skinny: Very skinny slices have a tendency to interrupt down an excessive amount of through the lengthy prepare dinner time and may lose their construction. A barely thicker minimize helps them maintain up higher as they prepare dinner down.
- Salt timing issues: Including salt later within the course of helps management how shortly the onions launch moisture, which helps higher texture and extra even caramelization.
- Look ahead to early browning cues: Should you discover darkish spots forming too quickly, that often means the warmth is a bit too excessive. Decrease the warmth so the onions can soften and develop taste regularly.
- Handle sticking with out disrupting taste: You don’t have to deglaze the pan for this recipe, but when the onions begin sticking an excessive amount of, a small splash of water can loosen them. If they begin trying dry, a drizzle of olive oil helps preserve even contact with the warmth.
- Pan selection impacts outcomes: Totally different cookware behaves in another way. Forged iron tends to retain regular warmth, whereas nonstick might prepare dinner a bit in another way. It’s necessary to observe the onions intently, whatever the pan you employ.
- Belief the timeline: The colour change occurs later than anticipated, so keep away from the urge to hurry or flip up the warmth in the event that they nonetheless look pale midway via. Anticipate your onions to take between 50 and 60 minutes!

Serving Concepts
French onion soup is the basic means to make use of them, however caramelized onions are a type of simple add-ons that immediately make absolutely anything style higher. I like conserving a batch within the fridge and utilizing them all through the week in each easy meals and extra elevated dishes.
Listed below are a few of my favourite methods to make use of caramelized onions:
Caramelized onions are considered one of my favourite meal prep components as a result of they work in so many alternative recipes all through the week. To retailer, allow them to cool fully earlier than transferring to an hermetic container. Retailer them within the fridge for as much as 7 days.
Once you’re prepared to make use of them, take pleasure in them chilly or gently reheat them in a skillet over low warmth. The microwave works, too, however the texture is greatest with the skillet technique.
To freeze, as soon as cooled, switch them to a freezer-safe container or freezer bag and freeze for as much as 3 months. For straightforward portioning, place them in an ice dice tray or a silicone mildew. As soon as frozen, switch the parts to a freezer bag and seize solely what you want.
To thaw, switch the onions to the fridge in a single day. You can even add frozen caramelized onions on to sizzling soups, sauces, grain bowls, pasta dishes, or skillets the place they’ll thaw and heat as they prepare dinner.

Do you caramelize onions in butter or oil?
You need to use both butter or oil to caramelize onions…or a mix of each! I want olive oil as a result of it has the next smoke level, however butter can add a richer taste.
Are you able to caramelize onions sooner?
You possibly can’t rush true caramelized onions. The deep taste and golden coloration come from gradual cooking over low warmth, which often takes about an hour. At increased warmth, you danger browning the surface too shortly earlier than the onions absolutely soften and develop taste.
Can I take advantage of white onions as an alternative of yellow?
White onions work simply wonderful. They have a tendency to have a sharper taste when uncooked however mellow out as they prepare dinner. They simply break down a bit sooner than yellow onions, so keep watch over the feel as they caramelize.
Can I caramelize onions within the oven?
Caramelizing onions within the oven is a good hands-off technique for cooking a bigger batch. Should you’d prefer to strive, steal my kitchen hack for mess-free onions within the oven. I take advantage of purple onions on this recipe, however differing kinds work with this technique, too. You’ll simply want a baking sheet for this recipe, not a Dutch oven.
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Use a mandoline or a really sharp knife to slice all 4 onions into even slices to about ¼- to ½-inch thick.
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Warmth a big, cast-iron skillet over low warmth and add the olive oil. When the olive oil is aromatic, add the onions.
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Toss the onions with olive oil and prepare dinner on low for Half-hour, stirring periodically.
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After Half-hour, season the onions with salt. Stir and let the onions prepare dinner for an additional 20-Half-hour over low warmth, stirring periodically.
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When the onions flip a golden brown coloration, take away them from the pan.
As for seasoning onions, for traditional caramelized onions, all you want is salt. Should you’d like so as to add additional taste, strive stirring in your most popular herbs, black pepper, or a splash of balsamic vinegar close to the top of cooking. Just a little goes a great distance!
Some recipes add brown sugar to hurry up browning and create a sweeter remaining taste. I want letting the onions’ pure sugars do the work!
Energy: 91 kcal, Carbohydrates: 7 g, Protein: 1 g, Fats: 7 g, Fiber: 1 g, Sugar: 3 g
Vitamin info is routinely calculated, so ought to solely be used as an approximation.

