Pumpkin coffee cake made with a yellow cake mix and with a brown sugar crumb topping.
Preheat oven to 350.
Mix cake mix, pumpkin puree, 1 tsp vanilla, and 1/2 tsp pumpkin spice and pour into greased 13x9 inch pan.
Bake for 20 minutes.
While cake is baking, mix crumb topping ingredients in a food processor until they started to clump together (you don't want a powdery mixture).
Remove cake from oven and sprinkle crumb topping over the top.
Return to oven for 20 additional minutes.
Sprinkle with powdered sugar and serve.