Preheat your oven to 350°F and lightly grease a 9 x 13-inch baking pan with nonstick spray.
Combine the pumpkin purée, evaporated milk, eggs, sugar, vanilla extract, pumpkin pie spice, and salt in a large mixing bowl. Pour this mixture into the baking pan.
Evenly sprinkle the dry cake mix over the pumpkin mixture without stirring. Pour the melted butter on top, and then add the chopped pecans over the cake mix.
Bake for 60 to 65 minutes, or until the top is golden brown.
Let the cake cool for 1-2 hours before serving with vanilla ice cream, then enjoy.
Notes
• Don't stir the cake mix into the pumpkin layer.• Pour the melted butter as evenly as possible over the dry cake mix.• Allow the cake to cool completely so the custard layer can set.• A scoop of vanilla ice cream is the perfect finishing touch.• This dessert tastes even better the next day after chilling overnight.