Here is a standby I make alot. Perfect for cool fall weather. It's a simple dump-it-on style dessert...really good topped with ice cream. I put one in the oven just today. It is best while still warm.
1 can (15 oz) solid-pack pumpkin
1 can (12 oz) evaporated milk
1 cup sugar
4 teaspoons pumpkin pie spice
1 package yellow cake mix
3/4 cup butter, melted
1-1/2 cups chopped walnuts
Vanilla ice cream or whipped cream
In a large mixing bowl, beat first five ingredients until smooth.
Transfer to a greased 13-in. x 9-in. baking pan.
Sprinkle with dry cake mix and drizzle with butter.
Top with walnuts.
Bake at 350° for 1 hour or until a knife inserted near the center comes out clean. Serve with ice cream or whipped cream.