A few years ago I found this very fun recipe for making brownies into a Halloween graveyard. It was a bit disturbing, but then I made them and really it was fun and cute!!
So how do you make them? Bake your brownies as usual. Once they have cooled, turn them out onto a flat surface. Cut out rectangles for the graves. Then I used shaved coconut and dyed it green for "grass". I also used Halloween chocolate molds to make the mummies and the tombstones.
The cool coffin I made using this pattern from Wilton. Check it out here.