Pistachio Millionaire's Shortbread With Coriander Butterscotch Recipe

Name: Pistachio Millionaire's Shortbread With Coriander Butterscotch Recipe
Total time: 90 min
Yield: 10
Ingredients: For the Pistachio Lemon Shortbread; 1 cup (2 sticks) unsalted butter, softened; 3/4 cup sugar; 1 1/2 teaspoons kosher salt; Zest of one lemon; 1 1/4 cups (8 ounces) shelled pistachio nuts; 1 1/2 cups all-purpose flour; For the Coriander Butterscotch; 1/2 cup (1 stick) unsalted butter; 1 1/2 cups raw (turbinado) sugar; 1/2 cup heavy cream; 1/2 cup Irish whiskey; 2 tablespoons coriander, toasted and freshly ground, plus more for dusting; 2 teaspoons kosher salt; For the Chocolate Topping; 8 ounces dark chocolate, about 70% cacao, chopped fine; 2 tablespoons unsalted butter