Crispy Chocolate Bars

1 package (10-1/2 ounces) miniature marshmallows
1 cup peanut butter
1 cup (6 ounces) semisweet chocolate chips
1/2 cup butter or margarine
2 cups crisp rice cereal
1 cup salted peanuts

Frosting:
1 cup (6 ounces) semisweet chocolate chips
1/4 cup butter or margarine
1/4 cup milk
2 cups confectioners' sugar
1 teaspoon vanilla extract

In a large microwave-safe bowl, combine the marshmallows, peanut butter, chocolate chips and butter. Cover and microwave on high for 1-1/2 minutes.

Stir until well blended (the mixture will be lumpy). Add cereal and peanuts; stir until well coated. Spread into a greased 13-in. x 9-in. pan.

For the frosting, combine chocolate chips, butter and milk in another microwave-safe bowl. Cover and microwave on high for 1 minute. Add sugar and vanilla.

With an electric mixer, beat frosting until smooth. Spread over the cereal mixture. Cover and refrigerate for 2 hours or until firm. Cut into squares. Makes about 4 dozen.