Step 1: Prepare the Crust

Preheat the oven to 325°F (163°C). Grease a 9x9-inch baking dish or line it with parchment paper.

In a medium bowl, combine the graham cracker crumbs, sugar, and melted butter. Stir until the mixture resembles wet sand.

Press the mixture firmly into the bottom of the prepared baking dish to form a crust. Bake for 8-10 minutes, then remove from the oven and let it cool while you prepare the cheesecake layer.

Step 2: Make the Cheesecake Layer

In a large bowl, beat the softened cream cheese and sugar together until smooth and creamy.

Add the eggs one at a time, mixing well after each addition. Stir in the vanilla extract and sour cream.

Pour the cheesecake filling over the cooled crust and smooth it into an even layer. Bake at 325°F (163°C) for 30-35 minutes, or until the center is set and the edges are lightly golden. Let it cool completely at room temperature, then refrigerate for at least 2 hours.

Step 3: Make the Banana Pudding Layer

In a mixing bowl, whisk together the banana pudding mix and milk until thickened, about 2 minutes.

Carefully spread the banana pudding over the chilled cheesecake layer, smoothing it out into an even layer.

Arrange banana slices over the top of the pudding layer, pressing them gently into the pudding.

Step 4: Assemble and Serve

Refrigerate the bars for an additional hour to allow the layers to set properly.

Before serving, top with whipped cream, extra banana slices, and crumbled vanilla wafers for a finishing touch.

Slice into bars and enjoy!