Step 1

Preheat the oven to 350 degrees. Grease a 9 x 13 baking pan.

Step 2

In a large bowl, combine the pumpkin puree, evaporated milk, eggs, sugar, pumpkin spice,cinnamon, vanilla, and salt until all is incorporated.

Step 3

Pour the batter into the greased baking pan. Sprinkle the yellow cake mix on top of the batter and gently pat the cake mix into the batter.

Step 4

Sprinkle the pecans and pistachios over the cake mix.

Step 5

Drizzle the melted butter over the chopped nut layer.

Step 6

Bake for 1 hour or until a knife comes clean from the center of the cake.

Step 7

Let the cake cool for 5-10 minutes and then serve with whipped topping.