Susan Simmer- I do not know if this was the problem, but I have noeictd that pre-shredded packaged cheese does not melt or mix into recipes like cheese that you shred yourself. This prompted me to read the ingredients and sure enough most pre-shredded cheese is tossed with an additive to keep the shreds from sticking together in the package. I now read the ingredients on all cheese to make sure it 100 percent real and shred my own.