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Leigh Anne Wilkes

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Home / Latest Posts / Recipes / Course / Side Dishes / Slow Cooker Caramelized Onions

Slow Cooker Caramelized Onions

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By: Leigh Anne WilkesPosted: 10/22/20Updated: 8/23/21

This post may contain affiliate links. Please see disclosure policy here.

bowl of caramelized onions

Slow Cooker Caramelized Onions turn out perfectly in the slow cooker and can be used for so many things such as soups, pastas and on top of burgers.

bowl of caramelized onions

Several weeks ago I was able to spend a few days at The J.M. Smucker’s headquarters in Orville, Ohio.   I  learned lots about the company, met lots of fun bloggers and ate a lot of yummy food.  Tomorrow I’ll have a a full post all about my trip but today I wanted to share with you one of the recipes they shared with us in the Make Ahead Meals presentation we had.

I think this may have been my favorite idea they shared with us!!

They showed us how to caramelize onions in a slow cooker.  I love caramelized onions but what I don’t like is chopping onions.  My husband is the official onion chopper at our house.

slow cooker caramelized onions

How to make slow cooker Caramelized Onions

It’s so easy to make a big batch of caramelized onions. You can make a whole batch all at once and then freeze them to use later on lots of yummy things.    Just get your husband to slice up the onions and then put them into your slow cooker.  Add in some olive oil and salt and then put the lid on and cook on slow all day.  Cook them until they get the desired brownness and caramelized just how you like them.  I cooked mine for 10 hours on low.

onions in slow cooker

Over the next few weeks I’ll be sharing a few recipes using caramelized onions but I am not opposed to just digging in with a fork and eating them all by themselves.  They are also a great topping for a burger or add to some homemade pizza.  Throw them in your favorite soup or top some veggies with them.  So many possibilities.

Slow Cooker Caramelized Onions

Can I Freeze Caramelized Onions?

They freeze great. I placed them in about 1 cup serving size into a freezer bag. Squeeze out as much air as you can and place in the freezer.

Just pull them out when you need them.

How Do I Use Caramelized Onions?

They can be added into soup, pasta sauces, on veggies or on top of a burger.

Here are some recipes we love using them in:

  • French Onion Soup.
  • Caramelized Brussels Sprouts
  • Onion Green Beans
  • In and Out Burger

For all my other favorite kitchen products and tools visit my Amazon Store.

Did you know I wrote a cookbook?  Check out the Holiday Slow Cooker Cookbook for 100 delicious recipes.

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Slow Cooker Caramelized Onions

4.80 from 10 votes

Slow Cooker Caramelized Onions

Recipe From: Leigh Anne Wilkes
Slow Cooker Caramelized Onions turn out perfectly in the slow cooker and can be used for so many things such as soups, pastas and on top of burgers.
serves: 10 servings
Prep:5 minutes
Cook:10 hours
Total:10 hours 5 minutes
Rate Recipe

Ingredients

  • 5 large onions sliced
  • 1/4 cup olive oil
  • 1/2 tsp salt

Instructions

  • Place sliced onions in slow cooker with oil and salt
  • Stir to coat.
  • Cook in slow cooker on low for about 10 hours or until they reach the stage of caramelization you like.

Recommended Products

Slow Cooker (6qt)
Slow Cooker Liners
Measuring Cups

Nutrition Facts:

Calories: 70kcal (4%) Carbohydrates: 5g (2%) Protein: 1g (2%) Fat: 5g (8%) Saturated Fat: 1g (6%) Sodium: 119mg (5%) Potassium: 80mg (2%) Fiber: 1g (4%) Sugar: 2g (2%) Vitamin C: 4mg (5%) Calcium: 13mg (1%) Iron: 1mg (6%)
* Disclaimer: All nutrition information are estimates only. Read full disclosure here.
Course:Side Dish
Cuisine:American
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bowl of caramelized onions
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  1. Kat says

    Posted on 1/10 at 9:11 am

    I’ve done this several times, and they always turn out amazing! And it’s so easy, I don’t have to worry about burning. Thanks for the awesome recipe!!

    Reply
  2. Luis M. says

    Posted on 2/5 at 10:18 am

    Wow! I never expected that they would turn out so delicious. The carmelized onions were so sweet and flavorful. I can eat it by the spoonful.

    Reply
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