Caramelized Onion & Spinach Olive Oil Quick Bread Recipe

This “technique recipe” focuses on tips and tricks for making the best caramelized onions as a flavorful and versatile building block for other recipes.

Caramelized onions are made by slowly cooking onions over a low heat to evaporate the water and draw out the sugars in the onions. They may not look the most appealing with their deep, uniformly brown color but they have a delicious mellow and sweet yet rich onion flavor and soft texture. They are not the same as grilled onions or charred onions cooked over high heat which will give you a bitter flavor. I use a mix of yellow onion and red onion in this recipe for a mix of mellow and sweet, as well as deeper onion flavor.

Use these caramelized onions as the base for French onion soup, or as a flavorful addition to your favorite breakfast sandwich. I’ve included photos for visual cues to help you know when onions are at various stages as well as a “how to” video below.

How To Caramelize Onions • Ciao Florentina

Heat a large stainless steel or cast iron pan over medium heat. Add the olive oil to the pan and heat through, then add the butter and allow to melt.

Working in batches, add the onions and toss quickly to remove the moisture from the onions. Sauté, stirring occasionally, until the onions are soft and start to brown.

Sprinkle the sugar and salt over the onions, stirring to combine. Reduce the heat to medium-low and cook, stirring occasionally, until the onions are light brown and begin to caramelize, about 20 minutes.

Big Batch Caramelized Onions

Continue to cook, stirring frequently, until the onions are uniformly brown and caramelized, about an additional 10 minutes. Remove the pan from heat. Let the caramelized onions cool and use or store until ready to use.

If not using caramelized onions right away, add them to a resealable container. Store them refrigerated for up to a week or freeze for up to 3 months.I like to freeze them in ice cube trays for easy portioned out use.

My world has, and always will, revolve around food. As soon as I finish one meal, I am planning for the next. Which is why I created this space to share with you! I hope you enjoy.Elise founded Simply Recipes in 2003 and led the site until 2019. She has an MA in Food Research from Stanford University.

Bacon Caramelized Onion Crostini

Caramelizing onions, by slowly cooking them in a little olive oil until they are richly browned, is a wonderful way to pull flavor out of the simplest of ingredients.

Onions are naturally sweet; and as caramel comes from the simple cooking of sugar when you slowly cook onions over an extended period of time, the natural sugars in the onions caramelize, making the result intensely and wonderfully flavorful.

You can use onions prepared this way on top of steak, or for onion soup, tarts, pizza, or onion dip. Or you can do what I did with this batch, eat it straight up. What are your favorite dishes to make that use caramelized onions? Please let us know in the comments.

How To Caramelize Onions (sweet Golden Perfection)

By the way, I put together a time-lapse video of the caramelization process, to show how the onions cook down and caramelize over the course of an hour. Enjoy!

In Step 3, there's a suggestion to deglaze the pan with wine (red or white) or balsamic vinegar. It's not necessary, but it will add some additional flavor. You can deglaze with these other liquids, too.

Freeze caramelized onions in a freezer safe zip top bag or a freezer safe container for up to 3 months. Suggestion: Freeze portions of caramelized onions in ice cube trays. When they're frozen, pop the portions out and quickly put them in a freezer safe zip top bag and back in the freezer. They won't stick together, and you'll be able to grab as much as you need when you need it.

How To Caramelize Onions Recipe

Quantities depend on how much caramelized onions you wish to make. In this example, 5 large raw onions yielded about 2 cups caramelized onions.

*The % Daily Value (DV) tells you how much a nutrient in a food serving contributes to a daily diet. 2, 000 calories a day is used for general nutrition advice.

Nutrition information is calculated using an ingredient database and should be considered an estimate. In cases where multiple ingredient alternatives are given, the first listed is calculated for nutrition. Garnishes and optional ingredients are not included.

How To Make Caramelized Onions

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Here’s a skill every home cook should master: how to caramelize onions! Now, you can saute onions in just 10 minutes. But cook them over the span of an hour, and it releases their natural sugars in a metamorphosis-like transformation. The onions go from raw and pungent to silky smooth and deep brown. The flavor is something other-worldly: sweetly savory, with an irresistibly luxurious texture. They turn burgers, dips, and pasta to pure gold. Here’s how to do it: with a graphic showing each stage of the caramelization!

You don’t really need a recipe to learn how to caramelize onions: think of it more like a rhythm. You’ll need onions, butter or oil, and salt: that’s it! Here’s a quick look at the stages of the caramelization process, then scroll down for a handy graphic.

Caramelized Onions Recipe With Video! {how To Caramelize Onions}

What’s the best way slice up this root veggie when you go to caramelize onions? Honestly, anything goes. Because you’re reducing them down so much, the exact shape of the onions doesn’t matter so much. But we do love to use French cut, a method for cutting onions where you cut from the stem to the root. It’s quick, it’s easy, and makes nicely shaped pieces. Here’s what to do:

Can you make caramelized onions ahead? Can you freeze caramelized onions? Yes! Because it takes 1 hour to caramelize onions, it’s not always possible for a weeknight dinner. Here’s how you can make them in advance:

There are so many ways to use caramelized onions: and you probably already have some ideas picked out! Here are some of the best ways to eat them:

How To Caramelize Onions (video)

Here’s how to caramelize onions so they’re deep brown and tender! This caramelized onion recipe is an essential technique for all home cooks. Follow this easy method for how to caramelize onions and you'll get a simple and sweet ingredient, side dish, condiment, appetizer - you name it - that pairs well with anything from a grilled burger to seared chicken to French onion soup.

Caramelized onions are absolutely amazing and so easy to make yourself at home! The caramelization process of slowly cooking sweet onions over medium heat helps draw out the natural sugars and sweet flavor of the onions so they are super mild and absolutely delicious.

Pile your caramelized onions on top of burgers, sandwiches, steaks, chicken, pork chops, salads and more or stir them into soups, casseroles, dips, and other dishes for incredible flavor. The possibilities are pretty endless.

Vegan Caramelized Onion Pasta

Caramelized onions get their name from the coloration and sweetness that happens during the cooking process. Cooking a raw onion until it is tender and caramelized not only changes the color but also cooks the natural sugars in the onion to give it a much sweeter flavor. While you may not want to bite into a raw onion like an apple, you may find that once caramelized, you can’t get enough of them.

They’re so good that you will want to make a big batch and store any extras in the fridge or freezer to have on hand!

It takes a little patience to make caramelized onions as opposed to sauteed onions. For best results, you want to give the onions plenty of time to caramelize at a lower temperature, but if you want to speed up the cooking time you can either stop early before the onions are fully caramelized when they aren't quite such a deep brown color or increase the heat to medium-high to cook them a little faster. They are still delicious but won't have quite the same amount of depth of flavor as the slow cooked version.

Real Caramelized Onions, Your Time Is Now

You want your sweet caramelized onions to be a nice rich and deep brown color. Much more so than a simple golden shade. The longer your onions cook, the darker the shade of brown will be.

Yellow onions are simply the best for caramelizing because of the high sugar content. It’s also easily available where produce is sold and very