Red onion marmalade greasy!

[BeeRose30]

I made a batch of red onion marmalade recently and have just tested one of the jars to see how it was maturing. The recipe was once I used a couple of years ago with great results. However, this time the product is quite greasy. There's a lot of visible fat dispersed through it and it leaves a residue on the spoon. Not sure where I've gone wrong. I noted the large amount of butter and oil called for in the recipe, but as it worked perfectly last time just followed it religiously. Can anyone suggest a way to save it? I am used to making jams and jellies, but not so adept with chutneys etc. I was thinking of either a) reheating and adding a small amount of flour, as with a greasy stew or sauce, or b) reheating and leaving it to sit in the hope that the fat would rise and be skimmed off. Any advice would be really appreciated!