I was going to ask how your mom made them, but then I saw that you already answered that question earlier, so thanks and I'll have to hunt that cutter down. I'm already planning to make a DW cake for my 20th birthday, so having Dalek cookies would be awesome too!
Yup! I'm a member of a local Doctor Who fan group that has regular parties and get togethers! They're a lot of fun! They do everything from watching episodes to acting out scripts of episodes to costume parties! Once they even made their own Doctor Who board game (it was a combination of Scene It and Cranium) and we all got together and played!
They sell it in grocery stores in the UK, but you can also find it on eBay. (My mom bought hers on eBay!)
The cookie cutter comes with a cookie mix, but she used her own cookie recipe. Any cookie recipe will do really! Any any type of chips (chocolate chips, peanut butter chips, white chocolate chips, butterscotch chips, etc.) will work! I also like to use those mini baking m&ms!