Preheat oven to 325F and line a square baking pan with foil. Set aside.
Using a food processor, process 14 cookies into fine crumbs. Add melted butter and process for 10 seconds.
24 Mocha Oreos, 2 Tablespoons butter
Press crust mixture into the bottom of the prepared pan with the back of a spoon. Place into the refrigerator while you make the cheesecake filling.
Add cream cheese, sugar, heavy whipping cream, vanilla, instant coffee mixture, and egg to the food processor bowl. Process for 5 seconds and scrape down the sides of the bowl. Repeat this process three additional times until mixture is combined well. Coarsely crush remaining cookies and stir into cheesecake mixture.
8 oz cream cheese, 1/2 cup granulated sugar, 1/4 cup heavy whipping cream, 1 teaspoon pure vanilla extract, 1 egg(s), 1 Tablespoon instant coffee, 24 Mocha Oreos
Remove crust from the refrigerator and spread cheesecake mixture onto the crust, smoothing it evenly.
Bake for 25-28 minutes or until there's no longer a jiggle in the center. Set aside to cool completely before refrigerating. Refrigerate before cutting into 16 bars.
Microwave chocolate chips in 20 second intervals, stirring in between, until completely melted. Drizzle with a spoon onto the cut bars, or place the chocolate into a sealable bag and snip the corner. Drizzle the chocolate onto the bars. Pop into the refrigerator until chocolate is set.
2 Tablespoons milk chocolate chips