Pumpkin Pie Dessert

I made this instead of birthday cake for my girls... and it was YUMMY! Thanks to my neighbor Jill....

Pumpkin Pie Dessert

1/2 C. butter
1 egg
1 yellow cake mix (save 1 cup)
Mix together and spread in bottom of a 9x13 pan.

1 lg. can pumpkin
1 1/2 C. sugar
2/3 C. evaporated milk
1 tsp. salt
4 eggs
3 tsp. pumpkin pie spice
Mix together and spread over bottom layer.

Topping:
1 C. reserved cake mix
1/2 C. sugar
1 tsp. cinnamon
1/4 C.butter
Mix with fork and sprinkle over top. Bake at 350 for 45-50 min.