Preheat oven to 350 degrees. Place the cake mix, vanilla, eggs, pumpkin and milk in a mixing bowl and whisk until incorporated well. Pour batter into a greased 9x13 glass pan. In a separate bowl mix together the topping ingredients and evenly distribute over the top of the cake. Bake the cake for 33-35 minutes or until the center of the cake is set. Remove from oven and let cool slightly before serving.