Preheat oven to 350 degrees. Prepare 9 x 13 baking dish by spraying it with cooking spray or lining it with aluminum foil and set aside.
In a saucepan add the chocolate chips and butter. Stir until melted Remove from heat and add sugar and vanilla. Stir well.
Add each egg one at a time, fully incorporating each egg until adding another one.
Stir in flour and salt.
Pour the brownie batter into the prepared baking dish. Bake for 30 - 35 minutes, being careful not to over bake.
Near the end of the cooking time for the brownies, start to prepare the topping. In a saucepan melt the chocolate chips and peanut butter. Stir often over low heat. When fully melted, remove from heat and stir in rice cereal.
Let the brownies cool for a bit, then spread the marshmallow creme over the warm brownies. Then carefully pour the rice cereal mixture over the marshmallow creme.
Let cool and then chill in the refrigerator for a couple of hours until cool, store in refrigerator