Peanut Butter Cups don't usually last long in our house.........well they normally don't, and most of the time we don't even buy them because; hey if they aren't in the house we can't eat them.
But back when my brother graduated from college, we bought a bag of mini peanut butter cups for his Graduation Party . We ended up forgetting about them and not using them.
So in my fridge they sat.... in the bottom drawer...as I think I was trying to hide them from myself. They lasted a pretty long time, as we'd only snack on one or two and then leave them alone.