Cookies are sweet themselves, but here thay are used as an ingredient for double the gratification.
Preheat oven to 350 degrees F. (180 degrees C.) and butter and flour a 9-inch (2.5 L) round cake pan, knocking out excess flour.
In a small, heavy-bottomed saucepot, melt chocolate and butter over low heat, stirring until smooth. Remove from heat. Allow to cool while starting next step.
In a mixing bowl, beat cream cheese until soft. Add sugar and cream until smooth. Beat in vanilla and eggs, adding one at a time until evenly blended. Stir in chocolate mixture. In a separate bowl sift together flour, baking powder, and salt and add to chocolate mixture, beating just until batter is combined. Stir in chopped cookie chunks.
Spread batter evenly in pan and bake for 25 to 30 minutes, or until a tester comes out clean. Allow brownies to cool.
To prepare icing, beat cream cheese with butter. Beat in icing sugar until smooth, stir in vanilla and half of the cookies chunks. Alternatively, make the icing in a food processor. Spread over brownies, sprinkle with remaining cookie chunks and chill for an hour before slicing. Slice in triangles.