Line an 8x8 baking pan with parchment paper, tin foil, or grease with butter.

In a medium size bowl, mix together the brownie mix, softened cream cheese and melted butter. You may have to use your hands to mix and get all of the brownie powder combined. Set aside.

Place the Golden Graham cereal in a large bowl. Set aside.

In a large saucepan, melt the butter and marshmallows over medium heat, stirring constantly until the marshmallows are melted. Pour the melted marshmallows over the Golden Grahams and mix until all of the cereal is coated. With buttered hands, take half of this mixture and press it into the bottom of the baking pan that has been covered with parchment paper.

Working quickly, press all of the brownie batter on top of the cereal mixture so that it covers the cereal. Butter your hands again, then press the rest of the Golden Graham mixture on top of the brownie batter.

Sprinkle the mini marshmallows on top of the layered bars. Set the oven to broil on high and put the s'more bars on the top oven rack for 3 minutes. Watch closely and remove as soon as the marshmallows get lightly browned. Allow the bars to cool for 2-3 minutes, then put the Hershey's squares on top of the bars. Place the Hershey pieces so that when you cut the bars, each bar has one piece of chocolate in the middle.

Cut the bars into squares and serve. These bars are best if eaten the same day, but will stay good for about 2 days at room temperature.