Take a bowl. Add the Oreo Cookies and crush them until they turn into fine powder.
Take another bowl. Add the mascarpone cheese, sugar, instant coffee and milk. Whisk until the mixture is well-combined and of thick consistency.
Add whipped cream and fold until well-combined.
Add the few crushed Oreo cookies and fold again.
Take a glass. Add ¼ of the crushed Oreo cookies and ¼ of the finely crushed Oreo cookies. Add 1 tbsp of the hot water instant coffee mix.
For the second layer, pipe ¼ of the prepared cookie cream.
Add the cookie layer - ¼ of the crushed Oreo cookies and ¼ of the finely crushed Oreo cookies, and 1 tbsp of the coffee mix. Use a spoon to flatten the layer.
Pipe another ¼ of the cookie cream. Repeat the process for the second glass.
Diagonally, cut a butter paper in half. Place it on each glass in a way that covers half the surface. Sprinkle cocoa powder on the tiramisu.
Remove the paper. Replace it with an Oreo cookie. Oreo Tiramisu is ready!