That's a pretty broad and general statement to make, considering that there are many supermarkets that do their own baking on premesis. I find that many of the baked goods vary in quality from store to store. ← What supermarket bakes on premise in New Jersey?- maybe they bake from a Gold Medal Mix-but it's still a mix! Modern Baking magazine publishes a yearly list of supermarkets bake from scratch, mix or have them sent in frozen. There ain't too many-if any-on THAT list that are baking the real deal! They just can't afford to do it.