4 ounces unsweetened chocolate
1/2 cup (1 stick) unsalted butter
1/2 cup packed brown sugar
1/2 cup granulated sugar
2 eggs
1/2 cup all-purpose flour
1/2 teaspoon ground cinnamon
1/2 teaspoon ancho chile powder
1/4 teaspoon nutmeg
1/8 teaspoon cayenne pepper
1/4-1/2 teaspoon flaked sea salt, optional