One thing is for sure though, these bars are so decadent and sweet, that I think they would be better with a regular Oreo rather than the double stuffed. But I might be partial because I’m not a huge double stuffed Oreo fan anyways… Oh and be aware that these bars are tall so they make a lot more than a normal batch of brownies on its own. You could probably serve twice as many people with these bars since you end up cutting them so small in an effort not to overwhelm people. Feel free to make things easier on yourself though and use boxed mixes rather than making everything from scratch : )
Ingredients:
For the Cookie Base:
- 1½ cups (7.5 oz) all-purpose flour
- 1 tsp baking powder
- ½ tsp salt
- 1½ cups packed (10.5 oz) light brown sugar
- 12 Tb unsalted butter, melted and cooled
- 2 large eggs
- 1½ tsp vanilla extract
- 1 (12 oz) bag semisweet chocolate chips
- 1 package Oreo Cookies
For the Brownie Layer:
- ⅓ cup Dutch-processed cocoa
- 1½ teaspoons instant espresso (optional)
- ½ cup plus 2 tablespoons boiling water
- 2 ounces unsweetened chocolate, finely chopped
- 4 tablespoons (1/2 stick) unsalted butter, melted
- ½ cup plus 2 tablespoons vegetable oil
- 2 large eggs
- 2 large egg yolks
- 2 teaspoons vanilla extract
- 2½ cups (17½ ounces) sugar
- 1¾ cups (8¾ ounces) unbleached all-purpose flour
- ¾ teaspoon table salt
Directions:
For the Cookie Base: Preheat oven to 350°F. Line a 9″ x 13″ pan with parchment or grease well. In a medium bowl, whisk together flour, baking powder, and salt; set aside.
In a large bowl, whisk brown sugar and melted butter together. Add eggs and vanilla and mix well. Using rubber spatula, fold dry ingredients into egg mixture until just combined. Do NOT overmix. Fold in chocolate chips. Pour into the prepared pan and smooth out the top.
Layer Oreo’s across cookie dough as tightly as possible, breaking any extra cookies to fit empty spaces.
For the Brownie Layer: Whisk cocoa, espresso powder (if using), and boiling water together in large bowl until smooth. Add unsweetened chocolate and whisk until chocolate is melted. Whisk in melted butter and oil. (Mixture may look curdled.) Add eggs, yolks, and vanilla and continue to whisk until smooth and homogeneous. Whisk in sugar until fully incorporated. Add flour and salt and mix with rubber spatula until combined.
Spread batter over Oreo layer and bake until toothpick inserted halfway between edge and center comes out with just a few moist crumbs attached, 50 to 60 minutes. Transfer pan to wire rack and cool 1½ hours.