This is a very nice version of onion marmalade. Skipped the mayo and added this as a topping to a turkey and swiss sandwich today...delish! Great as a sandwich topping (burgers in particular) or use on crackers, toasted baguette slices, or serve a block of cream cheese spread with this marmalade with crackers on the side. Onion marmalade is a way to take something ordinary and turn into extraordinary, so just let your imagination run wild. Caramelizing the red onion is key to the success of this recipe, so don't rush it, just let it cook down until it has reached its full sweetness. ººººººUPDATE 2.27.18ººººº The inspiration to make some red onion marmalade came from a hamburger I recently had at a local restaurant: a grilled burger topped with red onion marmalade with crumbled aged blue cheese on top , served on a toasted brioche bun. OMG, you really should try it, it's sensational!

LOVE this on top of anything! Especially on top of burgers with herbed goat cheese.

Fabulous! I made according to the recipe, even though I thought it might be too sweet. It was a little tangy, not too sweet, with a very rich oniony flavor. This will disappear and I'll be making it often. Thanks for sharing!

I had a similar product at a high end seafood restaurant. Had to try it at home. I kept tasting it along the way to try and make it match. I doubled the sugar, put 1/4 cup of the wine and used red wine vinegar instead of balsamic. It was a big hit. Will definitely make it again.

Always a crowd pleaser, and a great gift. Sometimes I'll throw in some fresh thyme during the cooking process, and that is also good. Great on wheat crackers with a slice of sharp white cheddar. And a cold beer, of course.

Love this recipe. Even though only had sweet onions not red recipe came out delicious. I had enough to take as an appetizer to a party and served with goat cheese and bread slices I brushed with olive oil and toasted till crisp. Everyone raved and asked what was in the recipe. I made enough for three pint jars one of which I gave away. I want to try with purple onions but right now I am making it again with the white. Great recipe! I did add a little English thyme when I decided I would be serving it with the goat cheese. Very yummy.

Tried this last night for topping my homemade Gorgonzola burgers. My finace went to Ohio with his brother a few weeks ago and had the "best burger of his life" which included red onion marmalade. So I just had to try to duplicate it. It was so simple to make and it tasted just absolutely delicious. The balance between the sweetness and acidity was like an explosion in your mouth! The only thing I would recommend is that if you want to yield enough for about 4 to 5 people I would definitely double the recipe. The two large onions I used cooked down to nothing! Overall a 5 star recipe!

We eat this on crackers freshly baked bread or burgers. Delicious and easy to make.

I made this exactly as the recipe called for used Cabernet and it was fantastic! I put it on burgers with Swiss cheese and bacon. So good!!