How to Make a Tiramisu Tart

Name: Tiramisu Tart
Yield: 12
Cuisine: american
Ingredients: 339 grams graham crackers; 100 grams unsalted butter, melted; 400 grams dark chocolate; 250 milliliters thickened cream; 150 milliliters kahlua; 400 milliliters thickened cream (whipping cream); 1 teaspoon vanilla extract; 4 tablespoons mascarpone cheese; Cocoa powder to dust