After deciding to make this recipe to use the can of pumpkin in the pantry I discovered it was only a 15 oz can. I cut the pumpkin mixture recipe in half, but used a full cake mix. I also used pumpkin pie spice instead of cinnamon. This was a big hit with all diners and will definitely grace my holiday table too. It's like pumpkin pie with a terrific topping. Different and without the doughy taste of pie crust. As made the pumpkin layer was about 3/4 inch thick. Thank you for sharing the recipe! Made for PAC Spring 2013.