Instructions

In a medium microwave-safe bowl, combine the mini marshmallows, butter, and peanut butter. Heat on high in 30-second bursts, stirring between, until melted and smooth. Stir in the rice cereal.

Using oiled or damp hands, press the cereal mixture over the top of the cooled brownies, forming it into an even layer. Set aside to cool.

To make the ganache, in a small saucepan over medium-low heat, bring the cream to a simmer. Add the chocolate chips and let sit for 1 minute.

Using a silicone spatula or a wooden spoon, stir the cream and chocolate until the mixture is smooth and glossy.

Pour the ganache over the rice treat layer and spread to the edges of the pan. Sprinkle with M&M's. Let cool until the chocolate is set before cutting. Wrap tightly or store in an airtight container.