1 package Betty Crocker brownie mix
1 (10.5oz) bag of mini marshmallows
2 cups semi sweet chocolate chips
1 cup peanut butter
1 tbsp butter
1 ½ cup Rice Crispy cereal
Preheat the oven to 350°
Grease a 13 x 9 baking dish and set aside.
Prepare the brownie mix according to the package directions for fudge like brownies.
Bake for 28-30 minutes. Top with the marshmallows and bake for another 3 minutes. (the marshmallows will not be completely melted) Cool.
In a medium saucepan over low heat, combine the chocolate chips, peanut butter and butter. Cook until smooth, stirring often.
Remove from the heat and stir in the cereal. Spread the mixture over the brownies. Refrigerate for 1-2 hours before cutting.