Heat oven to 375. Lightly spray a 9" x 13" pan w/ cooking spray. Unroll 1 pkg dough into bottom of pan. In lg bowl, cream together cream cheese, 3/4 cup sugar and marshmellow fluff until mixed well.
Pour mix on top of dough in pan. Crush graham crackers into fine crumbs. Add 2 tbsp sugar and 3 tbsp butter, ( melted,) shake bag. Layer cracker crumb mix on top of cream cheese mix in pan. Sprinkle w/ chocolate chips.
Then sprinkle w/ mini marshmellows. Unroll 2nd dough pkg. Place on top of mini marshmellow mix. Brush dough w/ remaining butter. Sprinkle w/ any remaining sugar. Bake about 13 mins, or until golden brown.