preheat 350

grease 13/9/2 pan with shortening or cooking spray

beat sugar, butter, vanilla, egg in large bowl till light and fluffy.

stir in 1/3 graham crackers, flour, and salt

pour mix into pan.

sprinkle chocolate chips over crust

drop marshmallow creme by tbl spoons over chips.

wet the back of tableware spoon and use to spread marshmallow creme

sprinkle with reserved crumb mixer and press lightly

bake 17-22 minutes or until marshmallows are puffed and light brown

cool for 30 minutes