Use honey to get the sweetness you want, and use rum to get the consistency you want. I substituted Amaretto in one batch for the bourbon and orange brandy for it in the second.
4 cups graham cracker crumbs
1 cup cocoa
3 cups finely chopped walnuts
honey
1 cup rum
1/2 cup bourbon
powdered sugar
Combine all ingredients except the powdered sugar and combine well.
Roll into smallish balls - they're very rich, so small will be appreciated.
Roll in powdered sugar.
Place into a cleaned airtight container for months.
I kept mine in the fridge so they were icy-cold treats