You would probably end up with a crust something like a Granola bar. Instead of graham crackers you can use Vanilla Wafers. I'm assuming you are making a pie crust.
graham cracker crumbs or vanilla wafer crumbs
You take a Graham Cracker... put it in a bowl... take another bowl... put it into the first bowl... apply pressure... take second bowl out of first bowl and voula! Graham Cracker Crumbs!
A tablespoon of graham cracker crumbs weighs about 8 grams. So, 2 tablespoons of graham cracker crumbs would weigh approximately 16 grams.
3
About 2 cups of graham cracker crumbs.
1 It would also be helpful to know what a cup of graham cracker crumbs weighs. My box of crackers is 14.4oz. I could estimate what portion of the box to use if I know how much a cup of crumbs weighs.
According to Cook's Thesaurus http://www.foodsubs.com/Crumbs.html 14 graham crackers = 1 Cup crumbs so, 12 graham crackers = 3/4 C + 1 Tbs (approximately)
Wheatmeal Biscuits
It depends on how big each crumb is.
To make a graham cracker crust, crush graham crackers into fine crumbs, mix with melted butter and sugar, press into a pie dish, and bake for 10 minutes at 350F.
To make a homemade graham cracker crust, crush graham crackers into fine crumbs, mix with melted butter and sugar, press into a pie dish, and bake until set.
A suitable substitute for a graham cracker crust in a dessert recipe could be crushed vanilla wafers, crushed digestive biscuits, or crushed ginger snaps.