Set it and forget it!
How to Make Caramelized Onions In the Slow Cooker!
Summer grilling season is upon us and what goes better with a juicy burger or a flame grilled steak? Crockpot Caramelized Onions!
While you are at work all day, let your slow cooker roast up some of these delicious Crockpot Caramelized Onions. They will be all ready to top any grilling masterpiece you have in mind for that night. Perfect!
Since this recipe does make about 3 cups of onions, leftovers can be covered and refrigerated for up to a week or two and can be frozen up to 6 months. How awesome is that?! You’ll have beautiful Crockpot Caramelized Onions all ready to go next time you grill.
Here are some other fun ways to use your onions: Hot dog, brat, steak or hamburger toppers. Saute with green beans, Brussels sprouts, potatoes or edamame . Baked potato or pizza topper!!! Drooling!!!!
Crockpot Caramelized Onions
- Start by peeling onions and cutting them int o large slices.
- Place onions in cooker and place pads of butter on top.
- Cover and cook on HIGH for 10 hours, until onions are dark brown and caramelized.
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Crockpot Caramelized Onions
Ingredients
- 5-6 large regular yellow onions
- 1/2 cup butter (do not use margarine )
Instructions
- Start by peeling onions and cutting them int o large slices.
- Place onions in cooker and place pads of butter on top.
- Cover and cook on HIGH for 10 hours, until onions are dark brown and caramelized.
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Nutrition Disclaimer
Family Fresh Meals is not a dietician or nutritionist, and any nutritional information shared is only an estimate. We recommend running the ingredients through an online nutritional calculator if you need to verify any information.
Small Footprints says
This sounds delicious and so easy. Question … do you think one could use olive oil instead of butter? Perhaps vegan butter? Thanks for sharing!
Corey says
I have not tried olive oil yet….but I have seen others use it and be successful! Try substituting in 1/3 -1/2 cup of oil for the butter 🙂 Hope that helps!
Small Footprints says
Thanks Corey, I’ll give it a try! 🙂
Lisa Nelson says
I love onions and this looks really really super delicious! I have pinned it and i am trying it. Will go to the store and get the onions.
My mouth is watering as I type.
Thanks so much for sharing – both of you!
Michael Haff says
What size crock pot works best? I’ve got a particularly large one.
Corey says
I used a 6 quart crockpot for these 🙂 Hope that helps!
Christen Noble says
Do you know how you could turn this into French Onion Soup once the onions are done?
Corey says
I have not done that yet. But am planing on trying soon! YUM
Lesson Lady says
I would not have thought to put onions in a crockpot to caramelize them! What a great idea and so easy!
Nicole says
Do you think you’d do this all the same for Red Onions?
Corey says
Never have tried red onions, but I bet they would also taste great!
Chris Bird says
Tried this a few days ago and my onions burnt. 🙁 Left them over night. Do you recommend stirring occasionally or should I try the low setting?
Corey says
I didn’t have to stir mine Chris. Every crockpot is different, so maybe try on a low setting. I hope that helps!
Barbara says
I need to cook 75 onions for 150 Kilbasa sandwiches, can I put more than 5 onions in the crock pot and cook for the same length of time and have them done in 10 hrs? hope so!!!
Corey says
Yes, you should be fine adding more. Make sure to add more butter as well! You might need to cook it a little longer, so adjust for maybe an hour or 2 longer 🙂
Jennifer says
I just launched my blog and this recipe inspired one of my first posts! Thank you! http://www.juniperinherhair.com/crock-pot-caramelized-onions/
pat says
Sorry. This recipe just didn’t make it. The onions were floating in their own broth and never even started to brown. I had to drain them and finish frying them in a hot frying pan.
Heather Robertson says
Tried this yesterday…Took about four more hours and I recommend taking the lid off the last 4 hours so the liquid evaporates. But tastes amazing….
Sara says
I use a similar recipe to make French Onion soup in the crock pot and the onions do sometimes burn. I think it helps to stir in the butter once it’s melted. Also, put a paper towel or two just under the lid to absorb some of the juices and really get a browning effect.
melinda says
so if i were to make these 2 days ahead of when needed to top dogs after i cooked i would put in the fridge but then how do i heat them back up ?
Corey says
Hi Melinda! You could just pop them in the microwave or stove top for a couple mins. I hope you love them!
Byama says
Ooo my 5 big onions are in the slow cooker as we speak, it’s the 8th hour, the house smells delicious, the Chihuahua is going nuts, the husband is smacking his lips.. I followed Sara’s advice and at the 7th hour put a bar cloth under the lid to start absorbing liquids (also to keep juices from sputtering out and all over my kitchen counter) and soon I will take the lid off to let them saute and brown to the wonderful finish. Also stirred frequently, per Sara, and that seems to help with even browning. They are already nice and dark golden colored, and a taste test has earned four thumbs up, even at this stage. I am so pleased at how easy this was! I plan to freeze half of them, will put in ice cube tray, am curious of other experiences with freezing and how that turns out, etc. Thank you so much for this brilliant eye opening recipe! Love it!
Corey says
Thank you so much for sharing Byama!
Byama says
Meant for this to have a 5-star rating, my goofy tablet misunderstood..
Valerie says
I tried the recipe and it took 14 hours and they were so tough – they were brown, stirred many times and still as tough as old boots – never, ever again. Do not waste your time at all.
Corey says
Yeah, 14 hours would be too long in the crockpot. I would recommend following the directions in the post for the best tasting onions.
Lacie Deleon says
If I’m going to add balsamic vinaigrette or brown sugar to the carmelized oniones in the Crock-Pot about how much should I use measurement balsamic vinaigrette or brown sugar
Corey says
That is a good question Lacie. I have only made them as the recipe states.