• Preheat the oven to 350 degrees F. Line a 13"x9" baking pan with non-stick foil.

For the Brownies:

• In a small bowl, whisk together the flour, cocoa powder and salt. Set aside.
  1 1/4 cup all-purpose flour, 2 tablespoon dark cocoa powder, 1 teaspoon salt
• In a double boiler, melt together the butter, chocolate and espresso powder. (This can also be done in the microwave, either with a "Melt Chocolate" setting or in 30 second bursts)
  1 cup unsalted butter, 12 ounce bittersweet chocolate, 1 teaspoon espresso powder
• Whisk the sugar and brown sugar into the melted chocolate mixture until well combined.
  1 1/4 cup sugar, 1/2 cup brown sugar
• Whisk in the eggs one at a time, adding the vanilla with the last egg. The mixture should be thick, glossy and pull slightly away from the sides of the double boiler or bowl.
  5 eggs, 1 tablespoon vanilla
• Fold in the flour and cocoa mixture until just combined.
• Fold in the Cookies N Cream candy.
  8 ounce Hershey's Cookies N Cream Candy
• Pour half the brownie batter into the prepared pan and spread evenly. Set aside while working on the filling.

For the Filling:

• Melt the butter in a medium sauce pan over medium-low heat.
  2 3/4 stick butter
• Simmer, stirring frequently, until the butter falls silent (if you notice brown bits forming, reduce heat to low).
• Strain the melted butter into the bowl of a stand mixer.
• Add vanilla, salt, cocoa and powdered sugar.
  3 cup powdered sugar, 1 1/2 teaspoon vanilla extract, 1/4 teaspoon salt, 1 1/2 tablespoon cocoa powder
• Using the paddle attachment mix on low speed to moisten and then increase to medium speed, beat until creamy and soft.
• Spoon over the top of the batter in the pan. Gently spread nearly to the edges, leaving about 1/2 inch all around.
• Sprinkle the chopped Oreos over the top of the cream filling.
  10 Chocolate Creme Oreos
• Carefully spread the remaining batter over the top of the chopped Oreos. Try not to mix the Oreos or the cream filling into the top layer of batter.
• Evenly sprinkle the remaining chopped Oreos over the top of the brownie batter, gently press into the batter.
  6 Chocolate Creme Oreos
• Bake in the preheated oven for 34-38 minutes until the brownies are dry on the top and just set.
• Cool brownies completely before attempting to cut (it is easiest to cut them if they are chilled).
• Store in an airtight container.