Crush the graham crackers into crumbs. I did this by putting them in a food processor. You could also place them in a ziploc bag and crush them with a rolling pin.
In a bowl, mix the graham cracker crumbs and the vegan buttery spread until combined.
Press the crust mixture in the bottom of an 8 inch cast iron skillet.
Spread the softened ice cream on top of the graham cracker crust.
Place the skillet in the freezer for about 30 minutes to firm up the ice cream.
Microwave the dairy free chocolate chips for 60 seconds. Stir, then microwave in 10 second intervals until melted and smooth.
Drizzle the melted chocolate over the ice cream layer.
Turn broiler on. Put the mini marshmallows on top of the melted chocolate. Place the skillet under the broiler and watch carefully. Once the marshmallows are golden brown - about one minute or so, remove from the oven and serve immediately.
Notes
Store leftovers in the freezer. Feel free to customize this pie any way you like! Use your favorite flavor of ice cream, use cookie crumbs for the crust - be creative!