To prepare a white chocolate hazelnut tartlets recipe, you will first need to prepare the ingredients for the tartlet. You will need: 14 cup (60 milliliters) confectioners' sugar, 1 tablespoon (2.5 ml) vanilla extract, and 1 teaspoon (0.5 g) of salt. Preheat the oven to 375?F (190?C) and grease and flour two 9-inch tart pans. Set aside. Melt the chocolate chips in the microwave in 30 second increments, stirring constantly, until melted and smooth. Add the vanilla and beat with an electric mixer until smooth and creamy. Pour the mixture into the prepared tart shells and bake for 20 to 25 minutes, or until the tops are golden brown. Remove from oven and allow to cool for 5 minutes before serving.