01 -
Heat the oven to 350°F (175°C). Set out a 9-inch tart pan with a removable bottom.
02 -
Pulse the Oreo cookies into fine crumbs. Add melted butter and a pinch of salt, then pulse or stir until the crumbs are evenly moistened.
03 -
Press the crumbs firmly into the bottom and sides of the tart pan. Bake for 8 minutes, then cool completely.
04 -
Place chopped chocolate in a heatproof bowl. Heat the cream until steaming, pour it over the chocolate, and let it stand for 3 minutes. Stir slowly until smooth, then stir in butter, vanilla, and salt.
05 -
Spread raspberry preserves in a thin, even layer over the cooled Oreo crust.
06 -
Pour the ganache over the preserves and smooth the top. Refrigerate for at least 2 hours, or until the center is firm enough to slice.
07 -
Arrange dry fresh raspberries over the chilled tart. Add flaky salt or chocolate curls if using, then slice with a warm clean knife.