Pumpkin Pie Dessert Squares

1 pkg yellow cake mix
1/2 c oleo melted
1 egg

Filling
3 c (14 oz) pumpkin pie mix
2 eggs
2/3 c milk

Topping:
1 c reserved cake mix
1/4 c white sugar
1 tsp cinnamon
1/4 c butter

Grease 13x9" pan.
Reserve 1 c cake mix for topping. 
Combine remaining cake mix batter and egg.  
Press into pan.

Filling:
Combine all ingredients until smooth.
Pour over crust.
Sprinkle topping over filling.
Bake 350  50-60 min.
If you use 1lb pumpkin- add 2 1/2 tsp pumpkin pie spic and 1/2 c brown sugar