National Oatmeal Muffin Day Images 2025 Schedule. Those who don’t eat a daily oatmeal muffin or have never eaten one are. National oatmeal muffin day, observed every year on december 19th, is a celebration of the warm, comforting, and wholesome goodness of oatmeal muffins.
The national oatmeal muffin day is observed on december 19. It is a perfect occasion to have a couple of healthy and at the same time delicious muffins.