For Cherry Jam:
6 ounces (1 heaping cup) pitted tart cherries (fresh or frozen)
1/4 cup peeled and finely grated granny smith apple*
1/2 cup granulated sugar

For Crust:
1 1/2 cups chocolate wafer cookie crumbs (from about 7 ounces cookies)
2 tablespoons granulated sugar
1/8 teaspoon fine sea salt
5 tablespoons unsalted butter, cut into chunks
2 ounces dark or semisweet chocolate, finely chopped

For Chocolate Filling:
7 ounces good quality dark chocolate (70-75%), finely chopped
1 1/4 cup heavy whipping cream, divided
1/4 cup unsalted butter, cut into chunks
1 teaspoon vanilla extract