Banana Pudding

Name: Banana Pudding
Ingredients: 3⁄4 cup sugar; 1⁄4 cup cornstarch; 1⁄2 tsp. kosher salt; 6 egg yolks; 3 1⁄2 cups milk; 2 tbsp. unsalted butter, cubed; 1 tbsp. vanilla extract; 1 tbsp. dark rum; 5 medium bananas, sliced; 1 12-oz. box vanilla wafers; 1 cup heavy cream; 1⁄4 cup confectioners’ sugar