Preheat oven to 350°F and lightly grease a 9-inch pie pan with nonstick spray.
Add the graham cracker crumbs, sugar, cinnamon, and salt to a medium bowl and stir to combine. Add the melted butter and stir until the mixture resembles wet sand.
1½ cups graham cracker crumbs, ¼ cup granulated sugar, ½ teaspoon ground cinnamon, ½ teaspoon kosher salt, 6 tablespoons unsalted butter
Transfer the graham cracker mixture to the prepared pie dish and press it into an even, compact, ¼-inch thick layer on the bottom and sides.
Bake for 10 minutes, then remove the crust from the oven and allow it to cool completely.
Add the vanilla pudding, banana pudding, and half-and-half to a large bowl. Beat with a hand or stand mixer for 2 minutes.
3.4 ounces instant vanilla pudding mix, 3.4 ounces instant banana pudding mix, 2 cups half-and-half
Gently fold in the whipped topping and vanilla extract.
8 ounces whipped topping, 1 teaspoon pure vanilla extract
Spread the filling into the cooled crust. Place the pie in the fridge for 4 hours, or until firm and fully set.
Garnish with whipped cream, sliced banana, and Nilla Wafers. Slice and enjoy.
Whipped cream, Nilla Wafers, Sliced fresh bananas