Line a 9x13 inch metal pan with parchment of foil and spray foil with cooking spray.
In a bowl, whisk together flour, cocoa powder, baking powder, baking soda and salt.
Beat butter and sugars at medium speed with an electric mixer until smooth; add eggs, coffee and vanilla, beating until just blended. Add flour mixture, beat at medium speed until just blended. Stir in sandwich cookies and remaining add-ins.
Spoon batter into prepared pan, spreading evenly.
Bake at 325, for 55-58 minutes. Cool completely in pan on wire rack. Cover and chill at least 2 hours, but preferably overnight.
Lift from pan and cut into brownies.