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 Articles Behind the Scenes What Food Manufacturers Need to Know About Going Kosher 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