Not so good grape jelly. What to do with it?

LOL healthierkitchen's link is hilarious (and delish!); the mustard and hot sauce add a little bit of a twist to a real Mad Men era recipe ...

what about this one?
http://www.food52.com/recipes/6203_oh_no_you_didntyes_i_did_meatballs

Melt it and use it to glaze a tart with purple fruit - like plums or blueberries.

to the marinade suggestion, i also meant to suggest that you add an acid like vinegar.

I made grape jelly a few years back that was a bit too grape candy tasting (grape candy turns out to taste like actual grapes with too much sugar, go figure). We ended up adding plums and extra lemon juice and turning it into a sort of syrupy jam that was great on gingerbread waffles.

I'm assuming, based on your description, that it's too sweet. Perhaps you can use it as a marinade for chicken: heat it in a saucepan and, once it's cooked down, add some rosemary, salt, and a nice amount of fresh black pepper, maybe even a touch of finely minced garlic. I think the lemon juice is also a good suggestion. Perhaps you can add some cranberries and orange zest and make some type of chutney. Have you tried it over some tangy yogurt or swirled in a cheesecake? In peanut butter and jelly bars. Ina garten has a great recipe for these.

Melt it down and add some lemon juice and water to use as a syrup for pancakes.