Brownie Cookie Whoopie Pies

1 . Stage

Preheat the oven to 350 degrees F (175 degrees C). Line 2 baking sheets with parchment paper. Lightly coat a wire rack with cooking spray.

2 . Stage

Stir brownie mix and flour together in a medium bowl until well combined. Add chocolate chips, oil, and eggs; stir until well blended.

3 . Stage

Scoop 20 rounded tablespoons onto the prepared baking sheets. Decorate 1/2 of the cookies with candy sprinkles.

4 . Stage

Bake in the preheated oven for 9 to 10 minutes. Remove from the oven and let stand for 2 to 3 minutes before removing to the sprayed rack to cool completely, about 30 minutes.

5 . Stage

Meanwhile, combine powdered sugar, butter, and vanilla in the bowl of a stand mixer fitted with the paddle attachment; blend until light and fluffy, about 4 minutes. Fold in marshmallow creme.

6 . Stage

Place marshmallow mixture in a large zip-top bag and cut a small hole in one corner. Pipe filling onto the center of one plain cookie and top with a sprinkled cookie. Repeat with remaining filling and cookies.