Mix jello as directed on the box. If you want to add alcohol replace ½ cup of the cold water with your preferred liquor.
Pour the jello into 7 (5.5-oz cups) or 14 (2.2-oz cups) and place in the fridge for 8 hours to overnight to set.
Once the jello has set. Remove the centers of the Oreo cookies and place them into a ziplock bag. Crush them with the flat side of a kitchen mallet or rolling pin to make coarse crumbs.
Sprinkle the Oreo cookie "dirt" on top of each cup of set jello.
Place the Graham crackers into a ziplock bag. Crush them with the flat side of a kitchen mallet or rolling pin to make coarse crumbs.
Sprinkle the Oreo dirt on top of each set jello cup, followed by some of the crushed Graham crackers.
Place two candy pumpkins on top of each cup. Serve cold. Enjoy and Happy Halloween!