Preheat oven to 400 degrees F. Line muffin tins with paper wrappers, lightly coat with cooking spray; set aside.
In a large bowl, stir together all of the ingredients until completely incorporated and smooth.
Fill each muffin slot ¾ of the way. Bake for about 18-20 minutes or until a toothpick comes out clean.
Serve warm or at room temperature.
