Pumpkin pie sheet cake If you love Pumpkin Pie, but don't want to worry about rolling and making and baking a pie crust...this is the perfect dessert for you. The crust is a combination of a yellow cake mix, 1/2 c. Melted butter and an egg. No shaping required! Just press it into a ( pam sprayed) jelly roll pan, mix up your pumpkin pie filling, pour it on top, bake 1 hour 350' and you will be sitting pretty with a Pumpkin Pie Sheet Cake dessert divine. 20 servings.