Here is one that I am sure you could substitute graham crackers into....I have not tried doing that myself but a relative has.
Pine Bark
Cover a cookie sheet with tin foil.
Line the pan with 1 layer of saltine crackers.
Melt 2 sticks of butter and 1 cup of brown sugar then let it boil for
for 3 minutes. Stir it constantly.
Pour this over the crackers.
Bake for 5 min. in a 400 degree oven.
Pour 12 ounces of semi sweet chocolate morsels over it.
Let it sit for a few seconds. When the morsels begin to melt,
spread them evenly with a spatula or wooden spoon over the top.
Let this cool. Then place it in the fridge overnight.
The next day, it will be very hard. Break it into peices (size is optional) and keep it in a container in the fridge.
This is a great and easy recipe. I tried it this Christmas and it was a hit. It stays good for a while too......I think that it would make a nice and easy little gift for someone maybe in a decorative container.
Good Luck,
Mowsearz