Here's what you need:
1 (15 oz) can pumpkin
1 (12 oz) can evaporated milk
1 cup sugar
2 teas pumpkin pie spice (if you use a yellow cake mix, increase this to 3 teas)
1 spice cake mix
3/4 cup butter, melted
1 cup chopped nuts
In a large bowl, combine pumpkin, milk, eggs, sugar and spice. Mix well and pour into a greased 9x13 pan.
In another bowl, combine the cake mix, melted butter and nuts. Drop by spoonfuls over the pumpkin mixture.
Bake at 350 degrees for 50-60 minutes or until a knife inserted in the center comes out clean.
Cut into squares and serve. This is really yummy with vanilla ice cream or whipped topping!