Yup.

Use one pkg of cake mix (I used Spice Cake) and one 15 oz can of pumpkin (not pumpkin pie mix. just pumpkin)

That's it . . . no eggs, no oil . . . and a LOT fewer calories
(something like a difference of 145 per piece vice 438)

Bake for 25 min in a 350º oven
It's amazing how moist & flavorful the cake is
I used fruit instead of frosting =)