Beat together (or hand mix) butter and sugar. Stir in beaten egg and vanilla.
Add graham crackers and flour and blend. You will have a nice dough.
Split dough in half.
Press half of dough into bottom and onto sides of greased 9-inch pie plate. You can use either regular or deep-dish.
Spread all of the marshmallow creme on top of the graham cracker crust.
Break up the Hershey's chocolate into pieces (try not to eat too many), and layer on top of the marshmallow creme.
Distribute the marshmallows on top of the chocolate layer.
Spread remainder of Graham Cracker crust on top of the pie. It's okay if a little marshmallow is peeking through.
Distribute chocolate chips on top, pressing into crust a little.
Bake in preheated 350 degree oven for about 20 minutes.
Let cool completely before serving so that it sets. Can reheat in microwave, but it's still addictive at room temperature. Serve with cold milk, vanilla ice cream, or freshly whipped cream.