1-First Step: Gather and prep. Preheat your oven to 325°F. Grab a 13×9-inch baking dish and line it with parchment if you prefer easier removal, but this is optional. Measure out the 60 vanilla wafers and pulse them in a food processor until finely crushed, or place them in a zip-top bag and crush with a rolling pin. Melt 1/3 cup butter and have 3 bananas washed and ready to slice. Keep the 2 packages of vanilla instant pudding, 3 cups cold milk, and 2 1/2 cups whipped topping close by. Good mise en place makes Banana Pudding Bars fast to assemble.

2-Second Step: Make and bake the crust. Combine the finely crushed vanilla wafers and melted butter directly in the 13×9-inch baking dish. Press the mixture firmly onto the bottom using the flat bottom of a glass or a measuring cup. This helps compact the crumbs and creates a stable base for the layers. Bake the crust at 325°F for 8 minutes to set the butter and give a subtle toasty flavor. Let the crust cool in the pan for about 10 minutes before adding bananas; this prevents the warm crust from breaking down the filling.

3-Third Step: Layer the bananas. Slice the 3 bananas into even rounds and layer them in a single even layer over the slightly cooled crust. For best presentation, overlap slices in neat rows, covering the crust. If you’re prepping ahead, wait to add bananas until serving to prevent browning, or brush slices lightly with lemon juice to slow oxidation.

4-Fourth Step: Prepare the pudding. In a medium bowl, whisk both packages (3.4 oz each) of vanilla instant pudding with 3 cups cold milk. Whisk for about 2 minutes until the pudding starts to thicken. Instant pudding sets with cold milk, so avoid warm liquids and measure the milk precisely to reach the right consistency. Once thickened, spread about 2 cups of the prepared pudding evenly over the bananas. This first pudding layer locks the banana slices in place and creates the creamy center.

5-Fifth Step: Make the lighter top layer. Reserve some pudding in the bowl. Stir 1 cup of whipped topping into the remaining pudding to lighten the texture. This creates a fluffy middle layer that contrasts with the firmer pudding under it. Spread this whipped-pudding mixture over the first pudding layer. The variation in textures is part of what makes these Banana Pudding Bars so appealing.

6-Sixth Step: Finish with whipped topping. Top the bars with the remaining 1 1/2 cups (since 2 1/2 cups were divided and 1 cup was mixed in) of whipped topping, spreading it evenly for a clean finish. For an optional decorative touch, sprinkle extra crushed vanilla wafers or place a few banana slices on top just before serving. The recipe notes that you can add these last-minute garnishes to avoid banana browning and keep the topping looking fresh.

7-Final Step: Chill and serve. Refrigerate the assembled Banana Pudding Bars for at least 3 hours. The recipe suggests 3 hours chilling time, but the bars often taste better after 4 hours or overnight as flavors meld and the pudding fully sets. Serve cold, cut into 16 bars. If you made the bars ahead, add fresh banana slices or extra crushed wafers just before serving to keep the appearance bright.