Simple, Fruit-Filled Muffins OU Kosher Staff November 19, 2018 Have perfect muffins ready in a matter of minutes with this simple recipe. OU Kosher Staff Related Articles Industrial Kosher Articles Kosher in the Factory A Friendly Guide to OU Kosher Labeling Requirements Case Studies Company Profiles Ethanol: From Corn to Kosher Vinegar Behind the Scenes Consumer Kosher Articles How is Cheese Made Kosher