1. Heat oven to 350 degree F. Crumble the cookie dough into a 13x9x2-inch baking pan. Press evenly onto bottom of pan; set aside.
2. Combine the cream cheese, sugar, and egg in a medium mixing bowl; beat by hand until smooth. Stir together the coffee crystals, vanilla, and 1 teaspoon water in a small bowl or custard cup until crystals are dissolved. Stir coffee mixture into cream cheese mixture.
3. Spread evenly over dough; sprinkle with chocolate pieces. Bake for 20 minutes or until completely set. Cool in pan on a wire rack; cut into bars. Makes 36 bars.