Churn ice cream according to manufacturer's directions. Meanwhile, in separate bowls or measuring cups, warm 1/2C hot fudge sauce
and 1 cup marshmallow fluff
. Coat the bottom of a freezer safe container with churned ice cream. Drizzle with room temperature hot fudge sauce, fluff and graham cracker pieces. Repeat layers several times, finishing with a layer of ice cream. Do not stir. Cover and freeze until solid.