Brownie cookie refers to a delectable snack which is believed to have originated in European cuisine. Brownie cookie combines the wholesome qualities of cookies with the flavor and aroma of chocolate. The main ingredients used to make this dish are flour, butter, eggs, chocolate and baking powder. This snack is commonly prepared in most European homes and also commercially sold in bakeries around the world. A favorite with kids, Brownie cookie is often served during tea parties.