Preparation Steps:

• Step 1: Prepare the Pretzel Crust. In a medium bowl, mix together the crushed pretzels, granulated sugar, and melted unsalted butter until well combined. Press the mixture firmly into the bottom and up the sides of a 9-inch pie dish. Bake in a preheated oven at 350°F (175°C) for about 10 minutes or until golden. Remove from the oven and let it cool completely.
• Step 2: Make the Chocolate Ganache. In a small saucepan over low heat, combine the chopped semisweet chocolate and heavy cream. Stir continuously until the chocolate is completely melted and smooth. Pour the ganache into the cooled pretzel crust and spread it evenly. Place the pie in the refrigerator to set while you prepare the filling.
• Step 3: Prepare the Banana Cream Filling. In a medium saucepan, whisk together the half-and-half, granulated sugar, and a pinch of salt. Heat over medium heat until the mixture is steaming but not boiling. In a separate bowl, whisk together the egg yolks and cornstarch until smooth. Gradually pour about 1 cup of the hot half-and-half mixture into the egg yolk mixture, whisking constantly.
• Step 4: Combine & Thicken. Return the tempered egg mixture to the saucepan with the remaining half-and-half. Cook over medium heat, stirring constantly, until the mixture thickens and begins to bubble. Remove from heat and stir in the cold unsalted butter and vanilla extract until smooth.
• Step 5: Add the Peanut Butter. In a separate bowl, mix the creamy peanut butter until smooth. Gradually fold in the warm custard mixture until fully combined.
• Step 6: Assemble the Pie. Remove the pie from the refrigerator. Layer the sliced bananas over the chocolate ganache, then pour the peanut butter filling on top. Spread it evenly and smooth the surface. Refrigerate the pie for at least 4 hours or until set.
• Step 7: Make the Whipped Cream Topping. In a mixing bowl, combine the heavy cream, granulated sugar, and vanilla extract. Using an electric mixer, whip the cream until soft peaks form. Spread the whipped cream over the chilled peanut butter filling.
• Step 8: Final Touches. Drizzle any remaining chocolate ganache over the top of the whipped cream if desired. Slice the pie and serve it chilled, garnished with additional banana slices or crushed pretzels for a pop of texture!