S'mores Ice Cream Cake!

12 graham crackers
2 T. butter, room temperature
2 c. chocolate chunks
14 oz. sweetened condensed milk
2 T. vanilla
2 c. heavy cream
1 c. marshmallows

Pulse 8 of the graham crackers in a food processor until fine crumbs.  Add the butter and pulse until it resembles wet sand.  Press into the bottom of a pie pan or glass dish.  Bake for 8-10 minutes at 350 degrees.  Let cool.  Meanwhile, melt 1/2 c. of the chocolate chunks for 1 minute in the microwave, stirring after 30 seconds.  Using a mixer, beat the melted chocolate, half of the condensed milk and half of the vanilla.  Add half of the cream and beat until stiff peaks form.  Fold in the marshmallows and spread over the graham cracker crust.  Using a clean bowl and mixer, beat the remaining condensed milk, vanilla, and cream until stiff peaks form.  Fold in 1 c. of the chocolate chunks and spread over the chocolate layer.  Break the remaining 4 graham crackers into tiny pieces and sprinkle over the top.  Also sprinkle the remaining 1/2 c. chocolate chunks over the top.  Cover and freeze until firm (8 hours).