Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great pan if you like the taste of Teflon

This muffin pan worked great until the last time I made muffins. I'm not sure what happened, but regardless of using non stick cooking spray in addition to the non stick coating on the pan, the muffins stuck to the pan and on each and every muffin there was a grey coat of shiny teflon (or whatever the non-stick coating is) all the way around the muffin! These pans were only a year or two old. In all fairness to Baker's Secret, maybe it would have happened with any Teflon coated muffin pan, but I know one thing's for sure...I will not be buying Baker's Secret pans again!