Here is another allrecipes.com recipe. I had some leftover pumpkin from the pancakes so I was needing to use it up. These are really good. I will probably be making these for Thanksgiving this year.
1 (18.25 ounce) package yellow cake mix
1/2 cup melted butter
3 eggs
3 cups pumpkin pie filling or canned pumpkin with 2 tbl pumpkin pie spice and 1/2 cup sugar
2/3 cup milk (I used 1 12oz can of evaporated milk)
1/2 bag of chocolate chips (I added this)
1/4 cup white sugar
1 teaspoon ground cinnamon
1/4 cup butter
I also used 1/2 cup of pecans in my topping
Preheat oven to 350 degrees F (190 degrees C).
Grease the bottom of a 9x13 inch pan.
Pour one cup of yellow cake mix into a medium size mixing bowl; set aside.
Combine remaining cake mix, 1/2 cup melted butter and 1 egg; mix well.
Press into the baking pan.
Combine pumpkin pie filling, 2 eggs and milk in a medium size mixing bowl; mix until smooth. Pour evenly over the crust in the 9x13 inch pan.
I put enough of the chocolate chips over the pumpkin mixture to cover.
Pour the sugar and cinnamon and pecans into the mixing bowl containing the 1 cup of yellow cake mix. Cut in the butter until the mixture looks crumbly. Sprinkle this mixture over the pumpkin filling.
Bake for 45 to 50 minutes or until a knife inserted into the bars come out clean. Let cool before cutting.
Store in fridge.