Brew your coffee and let it cool.
In a blender, combine ice, coffee, milk, cocoa powder, chocolate syrup, and sugar (if desired). Blend until smooth.
Pour the frappuccino into two glasses and top with whipped cream.
Preheat oven to 350°F (175°C).
In a mixing bowl, cream butter, brown sugar, and granulated sugar together.
Add egg and vanilla, mixing until smooth.
Stir in flour, baking soda, salt, and cocoa powder.
Fold in both semi-sweet and milk chocolate chips.
Drop dough by spoonfuls onto a baking sheet.
Bake for 12-15 minutes, then cool on a wire rack.
Serve the cookies alongside your frappuccino and enjoy!