In a large bowl, add ingredients to the brownie mix according to the directions on the box. Whisk & set aside.
In a separate bowl, with a hand mixer, beat cream cheese with pumpkin, sugar, egg & pumpkin pie spice.
In a greased square 8x8" or 9x9" baking dish, spread three-fourths of the brownie batter across the bottom. Then drizzle & pour all of the pumpkin batter over the bottom layer of brownies. Lastly, dollop the remaining brownie batter over the cream cheese mixture. Using a butter knife, swirl the brownie & pumpkin batters together to create a marbled look.
Bake at 350˚F for 50 minutes or until a toothpick comes out clean in the center. Allow to cool before cutting & serving. Store covered in the refrigerator.