In a large mixing bowl, combine: pumpkin, evaporated milk, eggs, pumpkin pie spice, sugar, and salt - mix well, until completely and thoroughly combined
Pour into the baking dish
Top this with the cake mix... crumbling over the pumpkin mix until evenly distributed
Add the nuts, spreading evenly over the top of the baking dish
Drizzle with melted butter
Bake 50 - 60 minutes
Serve warm... bonus points for homemade whipped cream or blue bell vanilla ice cream.