This is an incredible dessert! If you like pumpkin, you're going to love this! I've taken this to many get-togethers, and it always gets eaten the fastest! I don't remember the site that I got this, but Becky from Colo. gets the credit!
Preheat oven to 350°F Grease a 15 x 10-inch jellyroll pan;set aside.
In large bowl, combine cake mix, 1 egg, butter, 1/2 cup nuts and 1 1/2 teaspoons pumpkin pie spice. Using pastry blender, mix until crumbly. Press onto bottom of prepared pan; set aside.
In large mixer bowl, beat cream cheese until fluffy. Gradually beat in sweetened condensed milk,then.
remaining egg and egg whites, pumpkin, remaining 1 1/2 teaspoons pumpkin pie spice and salt; mix well. Pour over crust; sprinkle remaining 1/4 cup nuts on top. Bake for 30 to 35 minutes or until set. Cool.