The BEST Slow Cooker Caramelized Onions

5 from 1 vote

The BEST Slow Cooker Caramelized Onions

Sweet, jammy, and no skillet required—slow cooker caramelized onions are my new favorite kitchen hack, perfect for vegan burgers, soup, pasta, & more!

Prep Time15

Cook Time10

Total Time10 15

Course: Side Dish

Cuisine: American

Servings:

Calories: 142kcal

Author: Toni

Equipment

Ingredients

8 yellow onions thinly sliced
¼ cup of canola or other neutral-flavored oil
1 teaspoon of salt
½ teaspoon of brown sugar (optional)

Instructions

Combine the onions, oil, salt, and brown sugar (if using) in a slow cooker. Mix thoroughly.
Cover and cook on low for 10 hours.

Notes

Cut even-sized pieces: For uniform cooking.

Monitor and adjust: Your slow cooker may run a little warmer than mine, so it’s a good idea to monitor it your first time trying the recipe – occasional stirring might work best for you.

Jammier onions: After 10 hours, stir, place the lid slightly ajar, and cook for another 4-5 hours for sweeter, deeper, more complex onions.

Save the juice: If you don’t cook off extra juices, drain it, freeze it in an ice cube tray, and add to stocks, soups, stews, and sauces for depth.

Nutrition

Thank You! https://truesavings.info/the-best-slow-cooker-caramelized-onions/%C2%A0%3C/em%3E%3C/p%3E%3C/div%3E%3C/div%3E%3Cscript%3Ewindow.wprm_recipes = {"recipe-15978":{"type":"food","name":"The BEST Slow Cooker Caramelized Onions","slug":"wprm-the-best-slow-cooker-caramelized-onions","image_url":"https:\/\/foodsharingvegan.com\/wp-content\/uploads\/2025\/02\/Slow-Cooker-Carmelized-Onions-FSV-7.jpg","rating":{"count":1,"total":5,"average":5,"type":{"comment":1,"no_comment":0,"user":0},"user":0},"ingredients":[{"uid":0,"amount":"8","unit":"","name":"yellow onions","notes":"thinly sliced","id":2016,"type":"ingredient","unit_systems":{"unit-system-1":{"amount":"8","unit":"","unitParsed":""}}},{"uid":1,"amount":"\u00bc","unit":"cup","name":"of canola ","notes":"or other neutral-flavored oil<\/p>

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