Mix 1 cup wafer crumbs with 2 tablespoons sugar and melted butter until the texture resembles wet sand. Press firmly into the bottom of a 9x13 inch baking dish, creating an even layer that goes slightly up the sides. This crust will provide a sturdy base and prevent the filling from becoming soggy. Set aside while you prepare the remaining layers.

Using an electric mixer, whip the cream cheese for about 30 seconds until it's smooth and creamy. Add the powdered sugar and continue mixing until fully incorporated. Fold in 1 cup whipped topping gently with a spatula to keep it light and airy. Spread this mixture evenly over the prepared crust, smoothing the top with an offset spatula or the back of a spoon.

Slice 2 bananas into 1/2-inch thick rounds and arrange them in a single layer over the cream cheese mixture. The bananas will add natural sweetness and texture to the pudding layers. I like to arrange them slightly overlapping for a more appealing presentation.

In a microwave-safe bowl, whisk together 2 cups milk, 4 egg yolks, 2/3 cup sugar, 1/4 cup cornstarch, and salt for about 30 seconds until well combined. Microwave on high for 5-7 minutes, stirring every minute for the first 4 minutes, then every 30 seconds after that, until the mixture thickens to a custard consistency that coats the back of a spoon. Stir in 1 tsp vanilla and 2 tbsp butter until fully incorporated. The pudding will continue to thicken slightly as it cools, so remove it from heat when it's just slightly thinner than your desired final consistency.

Once the custard from Step 4 has cooled slightly for about 5 minutes, pour it evenly over the banana layer. Break 1/2 cup wafers into bite-sized pieces and sprinkle them over the pudding layer, pressing them down gently so they stay submerged and become slightly softened. Chill the entire dessert in the refrigerator for at least 2 hours, or up to 4 hours, so all the layers set and flavors meld together.

Remove the chilled pudding from the refrigerator and spread the remaining 7 oz of whipped topping evenly over the cracker layer, creating a smooth surface. Slice the remaining 1 banana into thin rounds and arrange them on top of the whipped cream for a fresh, attractive finish. Sprinkle 1/4 cup wafer crumbs over the entire surface for added crunch and visual appeal. Serve immediately, or chill for up to 2 more hours before serving.