Preheat the oven to 350 F. Line a 9X9 glass baking pan with parchment paper and spray it with coconut oil spray or cooking spray.
In a medium bowl, combine the white sugar for the brownie layer with the boiling water. Add in the melted butter, vanilla extract, and egg.
½ cup white sugar, 1 tablespoon boiling water, ¼ cup butter, ½ teaspoon vanilla extract, 1 large egg
Sprinkle the dry ingredients over the top of the brownie wet ingredients. Mix until combined (about 45-50 strokes.)
¼ cup all-purpose flour, 2 tablespoon all-purpose flour, ¼ teaspoon baking powder, ¾ teaspoon sea salt, ⅓ cup cocoa powder, ¼ cup powdered sugar, ¼ cup mini chocolate chips
Spread the brownie batter evenly across the bottom of the prepared baking pan.
In a large mixing bowl, combine the butter and sugar. Then, whisk in the egg and vanilla extract.
¼ cup butter, 2 tablespoon butter, ¼ cup brown sugar, ¼ cup white sugar, 1 large egg, 1 teaspoon vanilla extract
Sprinkle the dry ingredients over the top of the cookie bar wet ingredients. Mix until combined.
1 cup all-purpose flour, 2 tablespoon all-purpose flour, ½ teaspoon baking soda, ¾ teaspoon cornstarch, ¼ teaspoon sea salt, ½ cup mini chocolate chips
Use a cookie scoop to place dollops of cookie dough batter across the top of the brownie layer.
Top the layers with chopped Oreos.
6 regular Oreos
Bake in a preheated oven for 20 minutes uncovered, then cover with aluminum foil and bake for an additional 20 minutes. Allow the Oreo brookies to cool for 15 minutes on a cooling rack in the pan and then remove them for final cooling before cutting them into cookie bars.
Notes
Follow the recipe card as written in order for the best results.Store Oreo brookies in an airtight container at room temperature for 3-4 days.Cover the brookies with aluminum foil for the second half of baking to avoid the tops from becoming too browned.