I saw Death Star cookies on neatocoolville awhile back. Mr. Neatocoolville's really turned out awesome, Mine weren't quite as neat or cool ...but it was just as fun to destroy/eat them!
We used prepackaged sugar cookie dough since it's what was on hand. Next time we will have to try out the official Darth Vader approved recipe.
Neatocoolville got the recipe from a book he had when he was a kid:
I didn't feel like cooking tonight so I told pumpkinbutt that the huge death star cookie was for dinner and he could have halloween candy for dessert. I explained that it's similar to the restaurants in Texas where if you eat the massive steak (cookie) than you win a prize...chocolate cake! He opted for "real dinner", surprisingly.