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    Home » Type » Sauces and Condiments

    How to Make Caramelized Onions (The Best Balsamic Caramelized Onions of Your Life!)

    Published: Jun 28, 2023 by Faith · This post may contain affiliate links · Leave a Comment

    Jump to Recipe

    Learn how to make caramelized onions with step-by-step photos! Luscious balsamic caramelized onions are easy to make and have a rich, sweet, and balanced subtly fruity, slightly tangy flavor. They’re perfect on burgers, pizza, grilled cheese, pasta, grilled meat, or added to a cheese board!

    top view of balsamic caramelized onions in white ceramic dish with vintage spoon

    If you’re looking for a shortcut to make caramelized onions quickly, I’m going to let you in on a little secret.

    The best caramelized onions – the ones with rich, sweet and subtly tangy flavor and deep brown color – take at least 30 minutes to make.

    There’s just no getting around it, but I promise they’re worth it!

    close up of rich caramelized onions in small bowl with spoon

    In This Article

    • The Best Method for How to Make Caramelized Onions
    • How to Make Caramelized Onions
    • Storage
    • How to Use Balsamic Caramelized Onions
    • How to Make Caramelized Onions FAQs
    • Recipes Using Caramelized Onions
    • How to Make Caramelized Onions (The Best Balsamic Caramelized Onions!)

    The Best Method for How to Make Caramelized Onions

    Ingredients in Balsamic Caramelized Onions

    In this section I explain the ingredients and give substitution ideas. For the full recipe (including ingredient amounts), please see the recipe card below.

    ingredients for balsamic caramelized onions
    • Butter – we use a little butter for richness and to help prevent the onions from sticking
    • Onion – my favorite type of onion to use to make caramelized onion is yellow onion, but white onion, red onion, and even sweet onion (such as Vidalia) will all work
    • Water – when caramelizing onion, it’s helpful to add a splash of water if the onion starts to stick to the pan or starts to scorch because the pan gets too hot
    • Salt – to enhance the flavor
    • Balsamic vinegar – the sweet/tart fruity flavor of balsamic vinegar is the perfect offset to rich, sweet caramelized onion; essentially, the acid in vinegar helps balance the flavor profile

    How to Make Caramelized Onions

    how to make caramelized onions
    1. Add the butter to a large skillet over medium heat. Once melted, add the onion.
    2. Cook the onion until it is deep golden in color, about 30 minutes, stirring occasionally. Add a splash of water when it starts to stick to the pan, or when it starts to get too dark. Adjust the heat down as necessary so the onion doesn’t burn. This is the onion after cooking 10 minutes.
    3. This is after cooking 20 minutes.
    4. This is at the 30-minute point. The onions are beautifully caramelized.
    5. Once caramelized, stir in the salt and balsamic and cook about 1 minute, scraping up any brown bits from the bottom of the pan.
    6. Remove from the heat.

    Storage

    Once caramelized onion cools to room temperature, store it in an airtight container in the fridge for up to 1 week.

    close up top view of balsamic caramelized onions in white stoneware bowl

    How to Use Balsamic Caramelized Onions

    If you’re wondering what to do with caramelized onion once you make it, the possibilities are endless! Here are a few ideas:

    • Burger topping
    • Pizza topping
    • Add to grilled cheese sandwiches
    • Add to your favorite pasta dish
    • Serve with sliced cheeses as a chutney (caramelized onions are perfect on a charcuterie or cheese board)
    • Serve on top of grilled or roasted steak or chicken
    close up front view of burger topped with caramelized onion and arugula
    Caramelized onion is delicious on burgers!

    How to Make Caramelized Onions FAQs

    What Type of Onion is Best for Caramelizing?

    There are a few different kinds of onion that you can use to make caramelized onion. Here are the best options, ranked in order of my personal preference:

    1. Yellow onion (such as Spanish onion) – this type of onion is milder than some other types, and lends a savory base flavor that turns rich and sweetens as the onion caramelizes
    2. Red onion
    3. White onion
    4. Sweet onion (such as Vidalia) – this is the sweetest onion of all the onion options; if you use sweet onion because it’s all that’s available, I recommend increasing the balsamic vinegar to 3 tablespoons in this recipe to balance out the onion’s natural sweetness

    How Do You Cut Onions for Caramelizing?

    how to slice onion for caramelized onion

    This process is very easy, just make sure your knife is sharp and be careful.

    1. Peel the onion.
    2. Cut the onion in half.
    3. Thinly slice the onion halves.

    Should I Caramelize Onions with Butter or Oil?

    You can use butter or oil to make caramelized onion. The nice thing about using oil is that depending on what oil you use, it has a higher smoke point than butter (for example, avocado oil). This means it won’t scorch as easily. However, the good thing about using butter is that it adds rich flavor.

    For the best of both worlds, a lot of people use a combination of oil and butter to make caramelized onions. I’ve simplified this recipe and just use butter because I’m mindful of the heat, and never go higher than medium.

    However, the fats you can use to caramelize onion don’t stop with butter and oil! You could also use clarified butter (called ghee), duck fat, or tallow (which is rendered fat from beef or sometimes mutton).

    balsamic caramelized onion recipe

    Recipes Using Caramelized Onions

    • Crispy Potato Latkes with Caramelized Onion
    • Red Wine Caramelized Onion Flatbread with Manchego, Grapes, and Thyme
    • Warm Caramelized Onion Chickpea Spread

    Let's Connect

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    Did you make this recipe? Please rate it and leave a comment below. You can also tag @anediblemosaic on social media.

    To stay up-to-date, follow me on Facebook, Instagram, Pinterest, and Twitter!

    balsamic caramelized onion featured image

    How to Make Caramelized Onions (The Best Balsamic Caramelized Onions!)

    By: Faith Gorsky
    Learn how to make caramelized onions with step-by-step photos! Luscious balsamic caramelized onions are easy to make and have a rich, sweet, and balanced subtly fruity, slightly tangy flavor. They’re perfect on burgers, pizza, grilled cheese, pasta, grilled meat, or added to a cheese board!
    Print Recipe Pin Recipe
    Prep Time 5 minutes mins
    Cook Time 35 minutes mins
    Course Condiments
    Cuisine American
    Servings 8 servings
    Calories 34 kcal

    Ingredients
     
     

    • 2 tablespoons unsalted butter
    • 1 extremely large onion peeled and thinly sliced (about 5 cups sliced)
    • ¼ cup water slightly more or less as needed
    • ½ teaspoon salt
    • 2 tablespoons balsamic vinegar

    Instructions
     

    • Add the butter to a large skillet over medium heat. Once melted, add the onion.
    • Cook the onion until it is deep golden in color, about 30 minutes, stirring occasionally. Add a splash of water when it starts to stick to the pan, or when it starts to get too dark. Adjust the heat down as necessary so the onion doesn’t burn.
    • Once caramelized, stir in the salt and balsamic and cook about 1 minute, scraping up any brown bits from the bottom of the pan.
    • Remove from the heat.

    Faith's Tips

    • Recipe Yield and Serving Size: This recipe makes about 1 cup of caramelized onions, or 8 (2-tablespoon) servings.
    • Storage: Once caramelized onion cools to room temperature, store it in an airtight container in the fridge for up to 1 week.

    Nutrition

    Nutrition Facts
    How to Make Caramelized Onions (The Best Balsamic Caramelized Onions!)
    Amount Per Serving (2 tablespoons)
    Calories 34 Calories from Fat 27
    % Daily Value*
    Fat 3g5%
    Saturated Fat 2g13%
    Trans Fat 0.1g
    Polyunsaturated Fat 0.1g
    Monounsaturated Fat 1g
    Cholesterol 8mg3%
    Sodium 148mg6%
    Potassium 25mg1%
    Carbohydrates 2g1%
    Fiber 0.2g1%
    Sugar 1g1%
    Protein 0.2g0%
    Vitamin A 88IU2%
    Vitamin C 1mg1%
    Calcium 5mg1%
    Iron 0.1mg1%
    * Percent Daily Values are based on a 2000 calorie diet.
    Keyword Balsamic Caramelized Onions, How to Caramelize Onions, How to Make Caramelized Onions
    Tried this recipe?Let me know how it was!
    balsamic caramelized onions pin

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    Hi, I'm Faith!

    I’m the writer, recipe developer, photographer, and food stylist behind An Edible Mosaic. It’s my goal to inspire you to get in the kitchen, try something new, and find a favorite you didn’t know you had. Welcome to An Edible Mosaic!

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