01 -
Line a 9x9-inch baking pan with aluminum foil and lightly coat with nonstick spray; set aside.
02 -
Place Oreo cookies in a food processor and pulse at high speed until finely ground.
03 -
In a microwave-safe bowl, melt the butter and 1 tablespoon dark chocolate together until smooth. Pour over Oreo crumbs and process until combined.
04 -
Firmly press the chocolate crust mixture into the prepared pan, creating an even base. Set aside.
05 -
In a large mixing bowl, beat the softened cream cheese on high speed until fluffy using an electric hand mixer.
06 -
Combine chopped dark chocolate and heavy whipping cream in a large microwave-safe bowl, heating in 30-second increments and stirring until the chocolate is melted and the mixture is smooth and silky. Avoid overheating.
07 -
Add the melted chocolate mixer to the beaten cream cheese and blend on high speed until fully combined and smooth.
08 -
Optionally mix in Baileys, Kahlua, and salt to the chocolate cheesecake batter, adjusting to taste for balanced flavor.
09 -
Evenly spread the filling over the prepared crust in the pan.
10 -
Sprinkle the surface evenly with mini semi-sweet chocolate chips.
11 -
Refrigerate uncovered for at least 3 hours or overnight until set. Once thoroughly chilled, cover with foil to prevent condensation. Slice into bars prior to serving.