"I couldn't find chestnut puree and don't have a food processor, so I made it a Nutella layer instead. I substituted about 8 oz of Nutella for the chestnut puree and folded it into the whipped cream. Also, two regular sized Sara Lee pound cakes cut in 1/2 inch slices is a perfect fit. It turned out delicious!! I am thinking about hunting down the chestnut puree and making homemade butter pound cake for the Thanksgiving version. It was amazing with Nutella, so I'd imagine the chestnut version will be amazing too!