Pumpkin Dump Cake

1 can pumpkin pie mix for 2 pies
1 box white cake mix (or yellow)
1/2 c. chopped pecans (or walnuts)
1 c. melted butter

Mix pumpkin pie mix as directed on the can. Pour mixture into a 9 x 11 x 2 inch pan. Sprinkle dry white cake mix evenly over the top. Sprinkle with pecans. Pour 1 cup melted butter over entire top of dry cake mix. Bake as directed on pumpkin pie can