In a saucepan over low heat, melt the chocolate until just melted. Pour the chocolate into a bowl and let cool for 5-10 minutes. Use a blender to blend the Oreos into crumbs. Then, use it to make Oreo pieces.
8 oz Semi-sweet quality chocolate, 1 cup Oreo pieces, ¼ cup Oreo crumbs
In a mixing bowl, sift the flour and cocoa powder. Add in baking powder and salt.
1 cup All-purpose flour, ⅓ cup Dutch process cocoa powder, 1 ¼ teaspoon Baking powder, 1 teaspoon Salt
Using a mixer, beat the butter, brown sugar, and sugar on high for 2 minutes. Scrape the bowl and add in vanilla and melted chocolate. Beat on medium-high for 2 minutes.
½ cup Unsalted butter, 1 cup Brown sugar, ⅓ cup White granulated sugar, 2 teaspoon Pure vanilla extract
Add in eggs and egg yolk and mix on medium-high for 2 minutes. Scrape the bowl. Add in the dry ingredients and mix on low. Scrape the bowl and add in chocolate chips, Oreo crumbs, and Oreo pieces. Mix on low until just combined.
2 Large eggs, 1 Egg yolk, 1 ¼ cup Chocolate chips
Preheat oven to 350°F. Place cookie dough in the fridge to cool until the oven is done preheating. The cookies need a short chill time. Line 2 cookie sheets with parchment paper.
Use a heaping 3oz cookie scoop. The cookies should be 3.5oz in weight. Scoop 6 cookie dough balls per cookie sheet. It will make 16 large cookies.
Bake 1 pan at a time for 13-15 minutes. Top the cookies with large Oreo pieces, extra chocolate chips, and *optional sprinkle of Oreo crumbs. Let it sit for 5 minutes before transferring to a cooling rack.
Cool completely before enjoying.