Prepare the cheesecake mixture: In a microwave-resistant mug, add the unflavored gelatin and dissolve with the water. Heat in the microwave for 30 seconds. Mix and let cool.
In a saucepan add the heavy cream and heat. Remove from the heat and add the chocolate chips and mix quickly until the chocolate is melted. Set aside.
In the food processor, mix the cream cheese with the granulated sugar and sour cream until creamy. Then add the melted chocolate and gelatin and mix for a few seconds. Pour the mixture into a container and add the heavy cream in an enveloping form.
Use 2-ounce glass cups. Pour 1 tablespoon of the chopped sponge cake into the bottom of each mold and then add the chocolate cheesecake mixture. Repeat the procedure for each cup. Decorate with chocolate chip cookies.