Ingredients

Crust

1 3/4 cups crisped rice cereal

1/4 cup sugar

3 tablespoons light corn syrup

3 tablespoons unsalted butter, melted

Milk Chocolate-Peanut Butter Layer

5 ounces milk chocolate, coarsely chopped

1 cup creamy peanut butter

Chocolate Icing

3 ounces dark chocolate (60 to 72% cacao), coarsely chopped

1/2 teaspoon light corn syrup

4 tablespoons (1/2 stick) unsalted butter

Preparation

To make the crust: Lightly spray a paper towel with nonstick cooking spray and use it to rub the bottom and sides of an 8-inch square baking pan.

Put the cereal in a large bowl and set aside. Put 1/4 cup water into a saucepan. Add the sugar and corn syrup to the pan and use a small wooden spoon to stir the mixture just until combined. Cook over medium-high heat and bring to a boil; cook until the mixture reaches 235 F on a candy thermometer.

Remove from the heat, stir in the butter and pour the mixture over the cereal. Working quickly, stir until the cereal is thoroughly coated, then pour into the prepared pan. Using your hands or a rubber spatula, press the cereal mixture into the bottom of the pan only. Let cool to room temperature while you make the next layer.

To make the milk chocolate-peanut butter layer: In a large nonreactive metal bowl stir together the chocolate and peanut butter. Set the bowl over a saucepan of simmering water and cook until the mixture is smooth, stirring occasionally with a rubber spatula. Remove the bowl from the pan and stir for about 30 seconds to cool slightly. Pour the mixture over the cooled crust. Put the pan in the refrigerator for 1 hour, or until the top layer hardens.

To make the chocolate icing: In a large nonreactive metal bowl, combine the chocolate, corn syrup and butter. Set the bowl over a saucepan of simmering water and cook until the mixture is completely smooth, stirring occasionally with a rubber spatula. Remove the bowl from the pan and stir for about 30 seconds to cool slightly. Pour the mixture over the cooled milk chocolate-peanut butter layer and spread into an even layer. Put the pan in the refrigerator for 1 hour or until the topping hardens