Bake a batch of these oatmeal raisin cake mix muffins and see if your family doesn't eat them in record time. Don't like raisins? Try mini chocolate chips or craisins instead!
Preheat oven to 350 degrees. Line muffin pan with paper baking cups.
Mix cake mix, water, oil, eggs, oats, and cinnamon in a large bowl until thoroughly combined. Beat on medium speed for 1 minute. Fold in raisins and walnuts.
Pour batter into muffin cups filling 3/4 full. (A large dough scoop is perfect for this!) Bake 20 to 25 minutes or until toothpick inserted in center comes out clean.