Use 2 3/4 cups milk for a firmer pie that slices neatly. Use 3 cups milk for a slightly softer filling. For the freshest look, add banana slices on top right before serving. Do not freeze this pie. The pudding and bananas can turn watery after thawing. Store Banana Cream Pie With Pudding covered in the refrigerator for up to 3 days. Keep it chilled until ready to serve.