Onion Marmalade - I freakin love it! Every now and again I make up a big ol' batch of onion marmalade to add to my various jars of pickles and sauces in the fridge. Currently I have szechuan chili oil, pickled red onions, tomato/chili jam, pickled chilis, bbq sauce, homemade tandoori paste and some tomato chutney to name but a few.
It's so simple to make and is a perfect condiment to pull out to take your dish up a notch. Spoon it on top of that bacon cheese burger for maximum flavour. Maybe lather it on a pizza or flatbread with some rocket, brie and you are on to a winner. The onion is so versatile and used so widely in cooking. It would be just plain rude not to make some onion marmalade from it too!
Do you ever order a burger and see onion marmalade on it and say to yourself "damn, this is good"? Well, now instead of spending $$ in the shop or local burger joint you can whip up some delicious onion marmalade yourself. It really is so simple. In fact the frying pan (as long as it's on low) pretty much does all the work for you. Use some of those pantry staples you always here me harping on about. Then it's just a stir here and there and jobs a done!
I like to add chili flakes to mine to give it a little kick - most food here ends up getting spice added to it. Thyme is also a good addition to the onion marmalade too. Anyway, keeping it simple today so I won't bore you any longer with my ramblings. Well, anymore than I already have. Check out the recipe below and let me know how you get on.
Happy Cooking and Happy Eating Friends!

Ingredients
- 4 red onion sliced
- 2 tbsp olive oil
- 1 tsp salt
- 1 tbsp brown sugar optional
- 2 tbsp balsamic vinegar
- 1 tsp chili flakes
Instructions
- Heat the olive oil on a low heat and add the onions, chili flakes and salt to the pan.
- Cook on low for approx 20-30 mins. Stirring occasionally so they don't stick.
- Once onions are soft and melted add the brown sugar (if using) and balsamic vinegar. At this point you will need to keep an eye on it and stir every couple minutes as the colour and caramelization will begin *see tips*
- Once cooled store in an airtight container in the fridge for a couple months
Notes
Essential Tools
- chopping board
- sharp knife
- wooden spoon
- frying pan
Tips/Tricks
- the most important one is to make sure to keep the pan on LOW when cooking to allow the natural sugars from onions to release
- using sugar isn't necessary - there are enough natural sugars in red onions that if cooked low n slow then they will naturally caramelize BUT........
- honey can be used instead of brown sugar but I like brown sugar better - personally!
Aaaaaand now I want a burger... thanks mate haha! Awesome recipe, I love that you can mix them with different pickles and sauces - I'm gonna have to try that asap!
Get on it Sylvie! Works great on a pizza/flatbread too
I've never had onion marmalade but my husband loves it on his burgers. I'm so happy to have found a simple recipe. We'll be trying this one out soon.
Thanks Jennifer. It’s so simple and great on a burger too so ur hubbie will b happy
Hey Gav.
Love your work Bro!
Can one use brown onions?
Thanks Carl - you could totally use brown onions! The color won’t be the same but it be too different. Just remember not to cut the onions too thin and leave the heat on low!! Send me some pics or tag me @another_food_blogger ?
Mmm this sounds yummy, bet it would be good in a sandwich!
The best!!! In a burger and on flatbread/pizza too
I have never heard of this but it actually sounds pretty yummy. I love a good sauteed onion.
Easy as to make too ?
Oooo I've never tried an onion marmalade before! Definitely saving this to try in the future!
It’s so easy to make. Chop the onions, stir about a dozen times and that’s it. Just need 30mins of free time so u can keep an eye on it but that’s it
Looking at the other commenters, I feel better! I have never heard of onion marmalade either. However, it looks delish! I am saving this recipe to give it a try! Thanks for sharing!
Thanks Dominique. Pop it in a sandwich or on a burger and you won’t regret it. PLEASE let me know how you get on
I absolutely LOVE carmelized onions but I had never heard of onion marmalade. When I saw a link for it here, I had to check it out. It sounds like it would be just as delicious as caramelized onions so I will definitely be giving this recipe a try.
Awesome Deirdre!! Let me know how you get on. I hope you enjoy it