I do know how to make chocolate chips actually ... (but if I tell you, I'll have to kill you!!). tee hee!
Dukan chocolate chip cookies:
Mix 1 tsp less than 11% fat cocoa powder* with 1/2 an egg yolk, little bit of splenda and a drop or two of hot water. Spread the paste onto clingwrap (plastic wrap) and put it in the freezer for an hour.
Cut the chocolate in the freezer into small pieces and put a few pieces on top of each cookie.
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* apparently very difficult to find in the UK!