1 box chocolate cake mix
1 cup mayonnaise
1 cup water
1 tsp. cinnamon
Preheat oven to 350 degrees.
Grease and lightly flour two 9-inch round cake pans (this will also make 24 cupcakes or a 13x9 inch sheet cake.)
In a large bowl, with mixer on low speed, mix all cake ingredients 30 seconds. Beat on medium speed, scraping sides occasionally, 2 min.
Pour batter into prepared pans.
Bake 30 min. our until toothpick inserted in centers comes out clean.
Let cool on a wire rack for 10 min, them remove from pans and let cool completely.