For group trips we'd make it in a pan as per the directions. Set the pan on a wet towel in the shade. If you don't butter the graham cracker crust it gets mushy like IC mentioned. I've used parkay and the spray butter but never measured. If you use a pan be sure to save some to sprinkle on top for presentation. Oh, and always take the last piece. That way you get all the crumbs. We use to draw straws for it.

On solos or with my wife. I shake the mix and (milk powder) up in a bag and pour the buttered crumbs on top. Eat out of the bag. Never mix it together until it's on my spoon.

Layered with instant chocolate pudding is reeealy excellent too!