Prepare a box of brownies according to the directions on the package.
Bake in a 8x8 inch pan lined with foil.
After they are cooked according to the package directions let cool for a few minutes.
Pour the marshmallow fluff in a layer over the brownies.
Put a layer of the Rolo's over the top.
Return the pan to the oven for a few minutes until the Rolo's melt.
Remove from the heat and set aside.
Add the peanut butter and the chocolate chips to a small sauce pan and combine and melt over low heat.
Once mixture is melted, add the Rice Krispie Cereal and mix well.
Pour the mixture over the brownies and spread to cover.
Place pan in refrigerator to cool completely before cutting.