Step 1: Prep the Crust. In a medium bowl, combine your graham cracker crumbs, granulated sugar, and the melted butter. Mix until evenly moistened. Press this mixture firmly into the bottom of a 9-inch springform pan. Pop this into the fridge while you get started on the filling.
Step 2: Beat the Cream Cheese Mixture. In a large bowl, add the softened cream cheese, powdered sugar, and vanilla extract. Beat with an electric mixer on medium speed until completely smooth and creamy, scraping down the sides as needed.
Step 3: Whip the Cream. In a separate, clean bowl, pour in the cold heavy cream. Beat on high speed until stiff peaks form.
Step 4: Combine Gently. Take about half of your whipped cream and add it to the cream cheese mixture. Using a rubber spatula, gently fold it in. Add the remaining whipped cream and gently fold until just combined and no streaks remain.
Step 5: Assemble the Base. Pull your chilled crust out of the fridge. Carefully spoon the cream cheese filling evenly over the top of the graham cracker crust. Smooth it out into a nice, even layer.
Step 6: Add Those Banana Split Toppings! Arrange your thinly sliced banana pieces all over the top of the filling. Scatter the drained maraschino cherries and the very well-drained crushed pineapple evenly. Drizzle the chocolate syrup generously over everything.
Step 7: Chill, Chill, Chill! Cover the pan loosely with plastic wrap and pop the whole thing back into the refrigerator. It needs at least 4 hours to set up properly; overnight is even better.
Step 8: Slice and Serve. When ready to enjoy, carefully remove the sides of the springform pan. For the cleanest cuts, use a sharp knife dipped in hot water and wiped clean between slices. Serve it up cold.