Banana Espresso Pudding

Name: Banana Espresso Pudding
Ingredients: 2 cups whole milk; 2 tablespoons instant espresso powder; Pinch kosher salt; 1/2 cup granulated sugar; 4 large egg yolks plus 1 whole large egg; 1/4 cup cornstarch; 1/3 cup mascarpone; 2 tablespoons unsalted butter, cold; 1 teaspoon vanilla paste; 1 cup heavy whipping cream; 2 tablespoons confectioners' sugar; 1/2 teaspoon vanilla extract; 2 cups vanilla wafers; 3 cups sliced bananas (from 4 bananas); Crushed chocolate covered espresso beans, for topping