Preheat the oven to 350 degrees.
Combine the crumb topping ingredients in a bowl and using a pastry cutter, or two knives cut the butter into the mixture until you have crumbs; set aside.
In a mixing bowl, combine the cake mix, pumpkin puree, eggs and melted butter. Mix until combined.
Using a plastic pastry bag, add the mixture into the donut pan that has been sprayed with a non-stick spray. Use a butter knife to spread the donut batter out smoothly.
Place about one tablespoon of the crumb mixture onto the top of each donut batter.
Bake for 10 minutes to 12 minutes or until a toothpick inserted into one of the donuts comes out clean. Let the donuts cool slightly before removing them from the pan.
Combine the glaze ingredients together and drizzle over the cooled donuts.
