01 -
Set the oven temperature to 175°C and prepare for baking.
02 -
Lightly grease the baking pan to prevent sticking.
03 -
Melt the butter and combine it thoroughly with the granulated sugar.
04 -
Add the eggs and vanilla extract to the mixture, stirring until homogeneous.
05 -
Sift in cocoa powder, all-purpose flour, salt, and baking powder; fold gently until just combined.
06 -
Gently fold the chopped Oreo cookies into the batter evenly.
07 -
Pour the prepared batter into the greased baking pan, smoothing the surface.
08 -
Bake for 25 to 30 minutes until a toothpick inserted near the center comes out with moist crumbs.
09 -
Allow to cool completely before slicing into 16 squares for serving.