Mix the instant coffee in the warm water until completely dissolved.
Separate the cream filling from the Oreo cookies. Place the cookies and chocolate chips in a zip-lock bag and crush them into fine crumbs using a rolling pin or the bottom of a glass.
Add the crushed Oreo cookies, the reserved Oreo cream filling, milk, ice cubes, vanilla extract, and the dissolved coffee to a blender. Blend until thick, creamy, and smooth. For an extra creamy, you can also add 1 scoop of vanilla ice cream.
Drizzle chocolate syrup around the inside of a tall serving glass for a café-style presentation.
Pour the blended Frappuccino into the prepared glass.
Top generously with whipped cream, drizzle with more chocolate syrup, and sprinkle crushed Oreo cookies on top.
Serve immediately with a straw and enjoy your homemade Cookies and Cream Frappuccino!