I know that this is stupid question but how long does buttercream icing keep in the fridge?? I had some left over and was wondering if it was alright to still use it. Thanks!!!

Did you use milk or water?

It will keep in the refrigerator for 2 weeks, with milk or with water.

I found another thread on this subject:

http://cakecentral.com/modules.php?name=gallery&file=displayimage&pid=279843

HTH!

I use water in my buttercream not milk.