My family loves this cookie bar from one of my favorite cookbooks, they are so yummy and mix in a bunch of great staples of some of your favorite treats all in one. I've also used grahams crackers instead of the rice cereal to give it that smore taste. When I eat these I feel like a kid! Perfect wrapped and given as gifts!
Prepare and bake brownies following package directions. Remove from oven. Sprinkle marshmallows on hot brownies. Return to oven. Bake for 3 minutes longer.
Place chocolate chips, peanut butter and butter in medium saucepan. Cook over low heat, stirring constantly, until chips are melted. Add rice cereal; mix well. Spread mixture over marshmallow layer. Refrigerate until chilled. Cut into bars.