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Home » All Recipes

How to cook onions

Updated: July 31, 2025 · Published: May 4, 2021 1:09 pm by Olya Shepard · 6 Comments

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Learn how to cook onions on the stove with these easy to follow instructions! Bring out deep sweet and rich flavor by cooking the onions in the pan. Simple, no fuss method to caramelize onions!

How to cook onions

Nothing is better than perfectly caramelized onions, if cooking perfect onions is what you set out to do! This post is less of a recipe but mostly instructions about techniques. Cooking onions correctly is so easy if you just know how. I will show you how to do it. You just need a good pan and patience!

What are caramelized onions

How caramelized onions differ from other cooked onions? The main difference is that we cook the onions for extended period of time, which allows them to release the natural sugar. This natural sugar is what browns and caramelizes onions to give them this distinct color and texture. And sweeter taste.

Sauteed onions take only a few minutes to cook and they still retain their sharp, onion flavor, while caramelized onions are cooked much longer and stay in contact with heat and butter (or oil) for at least 10 minutes and up to 30 depending on volume.

How to Cook Onions

How many times have you stood at the stove cooking onions and crying? Way too many. You won't believe how easy this can be despite all the onion tears:). Get it right first time and every time. Here's the perfect way to cook onions until they are golden or brown.

  1. Chop your onions and set aside. I like to slice my onions on a thin side, but not too thin that they disappear into the skillet. Slicing them too thick is ok too, but will increase cooking time.
  2. First you will warm the skillet and add sliced onions. You should have plenty of room to stir the onions while they are cooking. Or, you can go in smaller batches.
  3. Stir and make sure the onions do not stick to the skillet! Total cooking time will be 20 to 30 minutes.

Tips to better browned onions

  • Make sure to heat the pan (and oil). In order for the onions to brown, rather than steam, the pan needs to be hot. Adding oil is optional but recommended for better browning.
  • Add the sliced onions in portions to avoid overcrowding. And use a wooden spoon, a spatula, and stir. Let them brown for several minutes.

These tips and techniques not only make for better sauteed onions, but they can also be used to add flavor and texture for ground lamb, turkey, or chicken, from meatballs to stews.

Storing cooked onions

Caramelized onions can be used immediately, refrigerated for up to a week, or frozen for three months.

The thing about cooking the onions, though, is that you probably will not need to store them. But if you do there's an essential second move whenever you're making caramelized onions: Freeze them.

Where to use caramelized onions

  • Use cooked onions in the soup, meatballs or a stew. This is perhaps the obvious choice, but French onion soup is a classic way to use caramelized onions.
  • Use them on top of hamburger. You can go straight from browning meat to tossing in a cube of cooked onion. which will be packed with more flavor than the onion you'd spend 5 minutes cooking otherwise-to finishing that sauce.
  • Use caramelized onions as a topping. It's your choice whether to use them in a salad, on pizza or on top of cooked meat!

Caramelized onions add such a rich sweetness to almost any dish, that I simply cannot get enough of them!

Enjoy!

Recipes that use caramelized onions

  • Creamy Meatballs and Pasta
  • Swedish Meatballs in Gravy Sauce
  • Sausage Stuffed Acorn Squash
  • Italian Chicken pasta
how to cook onions

How to Cook Onions

Caramelized onions are simply onions that are cooked for an extended period of time in either oil or butter.

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Course: Side Dish
Cuisine: American
Keyword: caramelized onions, how to cook onions
Prep Time: 5 minutes minutes
Cook Time: 30 minutes minutes
1
Author: Olya Shepard

Equipment

  • Skillet
  • Wooden spatula

Ingredients

  • 1 tablespoon butter
  • 2 tablespoon olive oil
  • 1 onion (sliced)
  • 1 pinch sea salt

Instructions

  • Peel the onions, place them on cutting board, and cut in half.
  • Cut the onions thinly. I like them to be sliced long and thin.
  • Heat a stainless steel skillet on medium high heat, add butter. Once melted, add olive oil until the oil and butter are simmering. Add the onion slices and stir to coat the onions with the oil. Spread the onions out evenly over the pan and let cook, stirring occasionally.
  • I recommend adding onions in batches to prevent overcrowding. Add salt.
  • The way to achieve perfect caramelization is to leave onions alone enough to brown, but not so long so that they burn. After the first 5 minutes, I usually lower the stove temperature a little, and sometimes add more butter.
  • I use wooden spatula to cook, scrape, and turn the onions, until the onions are a rich, browned color. 
Calories: 392kcal
Nutrition Facts
How to Cook Onions
Amount per Serving
Calories
392
% Daily Value*
Fat
 
39
g
60
%
Saturated Fat
 
11
g
69
%
Trans Fat
 
1
g
Cholesterol
 
30
mg
10
%
Sodium
 
144
mg
6
%
Potassium
 
164
mg
5
%
Carbohydrates
 
10
g
3
%
Fiber
 
2
g
8
%
Sugar
 
5
g
6
%
Protein
 
1
g
2
%
Vitamin A
 
352
IU
7
%
Vitamin C
 
8
mg
10
%
Calcium
 
29
mg
3
%
Iron
 
1
mg
6
%
* Percent Daily Values are based on a 2000 calorie diet.

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Comments

  1. Marsha says

    July 17, 2021 at 10:17 pm

    Thank you for great tips! Your onions look yummy. Now I can cook it like a pro. lol

    Reply
    • Olya says

      July 21, 2021 at 11:59 pm

      Yes you can:)

      Reply
  2. Jenny says

    June 14, 2021 at 10:07 pm

    Delicious!!! Loved your instructions!!!

    Reply
    • Olya says

      June 14, 2021 at 11:44 pm

      So glad you enjoyed it Jenny

      Reply
  3. Olesya says

    June 10, 2021 at 10:07 pm

    I am a big lover of onions and this was a way to cook them!

    Reply
  4. Hector says

    May 23, 2021 at 10:07 pm

    I wanted to let you know that this is how I now make my onions for all my burgers! Thank you.

    Reply
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Hi, I'm Olya! Welcome to the online home of my recipes that will make you look like a pro, yet without having to spend too much time in the kitchen! More about me →

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How to Cook Onions

How to Cook Onions

Ingredients

  • 1 tablespoon butter
  • 2 tablespoon olive oil
  • 1 onion ((sliced))
  • 1 pinch sea salt

Equipment

  • Skillet
  • Wooden spatula
1
Peel the onions, place them on cutting board, and cut in half.
2
Cut the onions thinly. I like them to be sliced long and thin.
3
Heat a stainless steel skillet on medium high heat, add butter. Once melted, add olive oil until the oil and butter are simmering. Add the onion slices and stir to coat the onions with the oil. Spread the onions out evenly over the pan and let cook, stirring occasionally.
4
I recommend adding onions in batches to prevent overcrowding. Add salt.
5
The way to achieve perfect caramelization is to leave onions alone enough to brown, but not so long so that they burn. After the first 5 minutes, I usually lower the stove temperature a little, and sometimes add more butter.
6
I use wooden spatula to cook, scrape, and turn the onions, until the onions are a rich, browned color. 

Hope you enjoyed cooking this recipe!

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