Prepare brownie mix & pour into greased 10" spring form pan.
Melt butter in glass dish & add crumbled graham cracker- mix until butter is absorbed & moist.
Add to top of brownie batter & spread out.
Bake brownies to pkg instructions- remove & cool completely.
Once brownies are cooled- scoop mocha ice cream on top- smooth out & press to combine scoops.
Top with marshmallow creme- spread to cover.
Sprinkle with roughly cut chocolate pieces & additional graham cracker pieces
Freeze overnight to firm up.
When serving- cut with a hot blade knife.
Drizzle chocolate syrup over top before serving each piece.