Ultimate Halloween Peanut Butter Oreo Brownie Bar

1/2 cup butter, softened

1 cup peanut butter

1/2 cup white sugar

1/2 cup brown sugar, packed

1 egg

3 tablespoons milk

1 teaspoon vanilla extract

1 1/4 cups all-purpose flour

3/4 teaspoon baking powder

1/4 teaspoon salt

1 (9.9 oz) pkg white chocolate candy corn M&Ms or 1 cup Reese’s Pieces

1 pkg Halloween or Double Stuffed Oreos

1 Family Size (9×13) Brownie mix

1/4 cup hot fudge topping

Preheat oven to 350 degrees F. Cream the butter, peanut butter, and both sugars in a large bowl with an electric mixer on medium speed for 3-5 minutes. Add the eggs, milk and vanilla and beat until dough is light and fluffy. In a separate bowl, whisk together the flour, baking powder and salt, then slowly add to the mixer until the flour is just combined. Stir in M&Ms. Spray a 9×13 baking dish with cooking spray, line with wax paper, and spray with cooking spray again. Spread the cookie dough in the bottom of the dish. Top with a layer of Oreos. Mix together brownie mix, adding an optional 1/4 cup of hot fudge topping to the mix. Pour the brownie batter over the cookie dough and Oreos. Bake at 350 degrees F for 45-55 minutes, until a toothpick inserted 2″ from the edge comes out with moist pieces clinging to it. 

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