text:  Federal food safety regulators have issued a warning to a top bakery. I love Thomas' English muffins. The Food and Drug Administration warns Bimbo Bakeries, the maker of Sara Lee and Entenmann's products, to stop using misleading labels saying products contain potentially dangerous allergens like sesame or tree nuts when they don't. FDA officials say in a warning letter that under its regulations, such products are misbranded and that food labels must be truthful and not misleading.