Bittersweet Chocolate Pumpkin Tart

Name: Bittersweet Chocolate Pumpkin Tart
Ingredients: 8 ounces vanilla wafer cookies; 1/2 cup pecan pieces; 2 tablespoons packed light brown sugar; 1/2 teaspoon ground cinnamon; 1/8 teaspoon kosher salt; 1/4 cup (1/2 stick) unsalted butter, melted; 3/4 cup heavy cream; 1/4 cup whole milk; 2/3 cup pumpkin purée; 9 ounces bittersweet (70%) chocolate, finely chopped; 2 large eggs; 1 teaspoon ground cinnamon; 1/2 teaspoon ground ginger; 1/4 teaspoon ground cloves; 1/8 teaspoon freshly grated nutmeg; 1 tablespoon bourbon (or substitute 1 teaspoon vanilla extract)