Preheat oven to 425 degrees F.
In a large bowl, combine the flour, graham cracker crumbs, sugar, baking powder and salt. Mix together with a fork.
Add the marshmallows and chocolate chips and stir everything together. Add the heavy cream to the dry mixture and combine together with a fork until everything loosely holds together.
Using your hands, form large mounds out of the dough, about 1/4 cup of dough for each scone. Place the scones onto a parchment lined baking sheet and refrigerate for 45 minutes before baking.
Place into preheated oven and bake for 13-15 minutes until fully baked. Remove and let cool slightly before serving.
They are extra delicious if you serve them with a spoonful of nutella or strawberry jam.