Creating Banana Foster Pudding is straightforward if you follow these simple steps:

1. Prepare Bananas: Peel and slice the bananas into thin rounds. Set aside.
2. Caramelize Bananas: In a saucepan over medium heat, melt the butter. Add the brown sugar and stir until it dissolves. Gently fold in the banana slices and cook for 2-3 minutes. If using, add the rum, and let it simmer for another minute. Remove from heat and set aside.
3. Make Pudding Base: In a separate medium saucepan, whisk together the granulated sugar, cornstarch, and salt. Gradually add the milk, stirring continuously. Cook over medium heat until the mixture thickens and begins to boil.
4. Add Egg Yolks: In a bowl, whisk the egg yolks. Slowly pour about a cup of the hot milk mixture into the yolks while whisking constantly. Then pour the egg mixture back into the saucepan. Cook for an additional 2-3 minutes, stirring constantly.
5. Flavor the Pudding: Remove from heat and stir in the vanilla extract. Allow the pudding to cool slightly before proceeding.
6. Layer the Dessert: In a large serving dish or individual cups, begin layering. Start with a layer of vanilla wafers or graham crackers, followed by a layer of pudding, then a layer of caramelized bananas. Repeat the layers until the dish is full, finishing with a layer of pudding on top.
7. Chill: Cover the dish with plastic wrap and refrigerate for at least 2 hours or until set.
8. Prepare Whipped Cream: In a mixing bowl, combine heavy cream and powdered sugar. Beat until soft peaks form.
9. Serve: Once the pudding is set, top with whipped cream before serving.

These steps will guide you effortlessly in creating this amazing Banana Foster Pudding that will surely delight everyone.