Chocolate Pudding Cake with Peppermint-Mascarpone Cream

INGREDIENTS

• Nonstick cooking spray
• 11 ounces dark chocolate, preferably 64 percent cacao
• 2 ounces milk chocolate
• 3/4 cup unsalted butter
• 8 large eggs, separated
• 1/2 cup light-brown sugar
• 1 tablespoon pure vanilla extract
• Pinch of coarse salt
• 1/3 cup plus 3 tablespoons granulated sugar
• 2 tablespoons crushed peppermint candies, plus 8 whole for garnish
• 1 cup mascarpone cheese, softened
• 1 cup whipped cream
• Confectioners' sugar, for dusting