Is there any better use for processed snack foods than to make a big pot of cookies 'n cream? There are tons of recipes for dirt cake, but the one my mom (or whoever she got it from) uses is the best IMO. Plus it tastes just as good if you use all fat free/low fat/sugar free ingredients.
Ingredients
1 pack Oreo cookies
1 box Jello vanilla instant pudding
1 (either 8 oz or 12 oz) container Cool Whip
1 brick cream cheese, softened
Preparation
Crush Oreos into fine crumbs using a hammer, rolling pin, or food processor.* Follow package instructions to prepare pudding (usually just mix with milk and let thicken). Mix pudding, Cool Whip, and cream cheese in a large bowl until relatively smooth. Spread a layer of cookie crumbs on the bottom of a flower pot, serving dish, or whatever contributes to the look you're going for. Spread a layer of pudding mixture on top and repeat until all the ingredients are used up, finishing with cookie crumbs on top. Decorate with gummy worms or fake flowers.
*If using regular Oreos, you can refrigerate them beforehand to make them more brittle. I wouldn't recommend it for reduced fat Oreos because the filling gets a bit hard.