Preheat the oven to 350 degrees F (175 degrees C). Grease a 9x13 inch baking dish.
In a large bowl, mix the cake mix, pumpkin, eggs and oil for 3 minutes using a mixer on medium speed. Pour into the prepared pan and spread evenly.
Bake for 35 to 40 minutes in the preheated oven, or until a toothpick inserted in the center comes out clean. Cool, then frost with cream cheese frosting.
