Learn how to caramelize onions in just a few minutes with very little effort for the perfect addition to dips, burgers, tacos and more! Easy to make with just two ingredients, these onions are a great addition to so many recipes!
It seems like such a simple thing, right? Well, I’m often asked how to caramelize onions and it’s one of those things I just do, without thinking about. Kind of like how my grandma baked – a little of this, a pinch of that. I realized when trying to explain to my sister that I should share how to caramelize onions in a little more detail.
To Make Caramelized Onions You Will Need:
You just need two basic ingredients to make these melt in the mouth onions!
- Onions
- Vegetable oil or butter
How to Caramelize Onions:
Slice your onions – I generally use 2 because 1 is never enough. It may seem like a lot, but once they caramelize, they reduce significantly in size.
Place them in your pan over medium heat. I frequently use my cast iron skillet, but any will do. Drizzle them with vegetable oil, then toss using my secret weapon – tongs. Cover the onions with a lid and let them do their magic for 10 minutes.
Toss the onions, replace the lid and let them continue to caramelize for another 10 minutes.
Variations For This Caramelized Onion Recipe
Add in a tablespoon of brown sugar or 1/2 tsp cayenne to kick it up a notch, but they’re perfectly delicious just as they are. Continue cooking for another 5 minutes, when golden brown and soft.
Feel free to substitute the yellow onions for shallots or red onions – the process is the same.
What To Serve With These Sauteed Onions
I use them on burgers, grilled cheese, tacos, pizzas, and dips. There’s rarely a week where I don’t have onions cooking to make something fabulous! They add an amazing flavor to liven up any meal!
Sauteed Onions Don’t Need A Lot Of Oil
The basics for caramelized onions are easy – sliced onions, oil and the secret I rarely see mentioned, a lid on your sauté pan! It’s the key that reduces the need to add more oil, you just need two tablespoons for perfectly soft and juicy onions. I prefer to use vegetable oil, but you can also use butter or olive oil.
The best Caramelized Onion recipe
I love how simple and easy it is to make these onions, the finished result are slightly sweet onions that have retained their juices. I find the best recipes that you use time and time again are often the simplest, and this makes an appearance on a weekly basis in our house!
How Long Do Caramelized Onions Keep?
Once the onions are cooked, let them cool to room temperature and place them in an airtight container in the fridge and they will keep for 3 to 4 days. You can then use them as is in recipes, or you can reheat them gently on the stovetop to serve.
You can also freeze the sautéed onions, so it’s great to make a big batch and then store them in airtight containers or ziplock bags in the freezer. You can reheat them from frozen.
Top Tips To Make This Caramelized Onion Recipe
- Don’t use more than 2 tablespoons of oil or butter, or the sauteed onions can become too greasy.
- Be sure to put a lid on the sauté pan – this speeds up the cooking and helps the onions retain their moisture.
- To make the onions vegan, use a plant based oil or butter.
- You may need to slightly decrease your cooking time if you slice your onions thinly.
Be Sure To Check Out These Other Quick And Easy Recipes!
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How to Caramelize Onions
Ingredients
- 2 large yellow onions
- 2 Tbsp vegetable oil or butter
Instructions
- Slice onions and put them in a pan over medium heat.
- Drizzle with vegetable oil, then toss to coat. Cover the onions with a lid and cook for 10 minutes.
- Stir the onions, replace the lid and let them continue to caramelize for another 10 minutes.
- Stir and continue cooking for another 5 minutes, when golden brown and soft.
Notes
If you want to save this recipe for later, you can pin it here:
These look delicious! How long do they last in the refrigerator?
A few days in an air tight container. Enjoy!
My hubby love carmelize onions, he could eat them all the time 🙂
One of my favorite things to put caramelized onions on is grilled cheese… or pretty much any sandwich. 🙂
Yes! It makes them ridiculously good, doesn’t it!
Caramelized onions add so much flavor to so many things. LOVE!
I’m a huge fan of caramelized onions—and I’ve never thought of using the lid to reduce the need for more oil. Brilliant!!!
The lid works like a charm, I’ve been doing it for years. It also helps reduce cooking time and that helps keep the onions tender not dried out.
So true, Michele! Have a great weekend!