Chocolate Roll Snack Cakes

Name: Chocolate Roll Snack Cakes
Ingredients: For the chocolate sponge cake:; 2 ounces Dutch-processed cocoa powder; 2 ounces hot water; 1 1/2 teaspoons vanilla extract; 2 tablespoons unsalted butter, soft at room temperature; 5 ounces sugar, divided; 4 ounces egg yolks; 7 ounces egg whites (from about 6 large eggs); cocoa powder, for dusting; For the mascarpone vanilla bean whipped cream and dark chocolate glaze:; 8 ounces heavy cream; 4 ounces mascarpone cheese; 1 ounce sugar; 1 teaspoon vanilla extract; 1 vanilla bean, split lengthwise and seeds scraped; 8 ounces 60% to 70% dark chocolate; 6 ounces unsalted butter; 1 teaspoon honey