Chocolate Raspberry Pot Pies

Name: Chocolate Raspberry Pot Pies
Ingredients: 9 tablespoons (1 stick plus 1 tablespoon) cool unsalted butter, cut into pieces; 3/8 cup sugar; 1 egg yolk; 1/4 teaspoon pure vanilla extract; 1/4 teaspoon baking powder; Scant 1 1/2 cups all-purpose flour; 1/4 cup cocoa powder, preferably Dutch-process, plus extra for rolling; 6 egg yolks; 4 eggs; 1/4 cup sugar; 18 ounces semisweet chocolate, melted; 10 tablespoons (1 stick plus 2 tablespoons) unsalted butter, melted; 1 cup raspberries; Whipped cream for serving, optional