I used this recipe for the doughnuts.
Chocolate Cream Cheese Glaze
4oz cream cheese, room temperature
4 tbs icing sugar, sifted
1/4 cup milk
1 tbs vanilla extract.
1/2 cup chocolate chips, melted
In a medium sized bowl, beat cream cheese until light and fluffy. Sift in icing sugar (very important for no icing sugar clumps in your glaze). Beat until incorporated. Beat in milk and vanilla. Stir in melted chocolate.
I dipped the doughnuts in the chocolate glaze and crumbled the graham crackers on top then added a few mini marshmallows to each. I wanted some graham cracker crumbs as well as larger cracker pieces on each to add a bit of extra crunch. Drizzle with melted chocolate.
If you have a kitchen torch it might be fun to brown the marshmallows a little bit before you drizzle chocolate on top, I however do not have one, and learned that a lighter isn't strong enough to roast marshmallows.