• Preheat oven to 350 degrees F.
• Spray a 9x13" baking dish with cooking spray. Optional, but recommended: line dish with parchment paper.
• Prepare brownie mix according to package directions.
• In a separate bowl, beat together the butter, brown sugar, granulated sugar, vanilla, and pumpkin puree.
• Add the flour, spices, baking soda, and salt, and mix until well combined.

To assemble:

• Pour brownie batter into prepared pan.
• Scoop dollops of pumpkin dough on top of brownie batter.
• Use a butter knife to swirl the pumpkin dough throughout the brownie. It is a thick dough, but it will swirl - I promise!
• Bake in preheated oven for 35-40 minutes. Watch it closely and do not over bake. You want the center set, but a toothpick should still have some crumbs on it when it comes out of the oven.
• Let cool completely.
• Cut and enjoy!