CHOCOLATE AND RASPBERRY NAPOLEONS

Steps:

• Line a 9-by-13-by-2-inch baking pan with parchment paper. Set aside. Place raspberries (if using fresh raspberries, reserve 1/2 cup for garnish) in a medium skillet over medium heat. Simmer until raspberries begin to break down and liquid is released, 4 to 5 minutes. Transfer raspberries to a food processor, and puree, about 20 seconds. Pass through a fine sieve. Set aside to cool.
• Fill a large bowl with ice and water; set aside. Bring a stockpot 1/4 full of water to a boil. Let simmer. In a medium stainless-steel bowl, whisk together egg yolks, 2 tablespoons sugar, corn syrup, and kirsch or champagne; place over simmering water. Whisking constantly, cook until mixture thickens (when whisk is lifted over the mixture, the ribbonlike trail it leaves on the surface should hold its shape for 1 or 2 seconds), about 4 minutes. Transfer bowl to the ice-water bath; whisk mixture while it cools. Add 3/4 cup raspberry puree to mixture; whisk to combine. Set aside.
• In an electric mixer fitted with the whisk attachment, beat egg whites on high speed until frothy, about 30 seconds. While mixer is running, gradually add remaining 6 tablespoons sugar; beat until very stiff, 2 to 2 1/2 minutes. Transfer mixture to a bowl. Beat cream with whisk attachment until stiff; fold into egg whites.
• Fold raspberry mixture into egg whites and cream. Pour the mixture into the prepared baking pan; cover with plastic wrap. Transfer to the freezer; freeze until hardened, at least 4 hours. This can be prepared up to 2 days in advance.
• To make the raspberry sauce, stir superfine sugar into the remaining raspberry puree (about 2 tablespoons). Refrigerate until ready to serve.
• To serve, use a heart-shaped cookie cutter (2 1/2 inches across at the widest point) to cut out 4 hearts from the semifreddo. Divide the raspberry sauce between 2 dessert plates. Place a chocolate heart, off center, on top of the raspberry sauce. Place a semifreddo heart on each chocolate heart and repeat layering until there are 3 layers of chocolate and 2 layers of semifreddo, ending with a chocolate heart. Garnish with the reserved fresh raspberries (if using), sift confectioners' sugar over the raspberries, if desired.