By all means, if the shoe fits. Simply mix in a cup or so of your favorite chocolate chips right at the end of mixing. The chips might melt a little bit, but that will simply provide more bites with chocolate. You can also sprinkle chocolate chips on top of the mixture right after you press the mixture into the pan. If you choose topping the treats with chips, once you create a somewhat even layer, press the chips into treats a bit. This will help them stick and not fall off when you cut the squares and serve.