When you mix ingredients that on their own won't go back for a long time, how quickly does the mixture go bad?
I have a chocolate peanut butter cup recipe that I use almost weekly, and I would like to make a large batch of the filling. It is butter, graham cracker crumbs, powdered sugar, and peanut butter. On their own, the ingredients won't go bad for months (years?), however, how long will they keep when blended together and put in the fridge? Freezer?
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