Slice the bananas into even rounds and place them in a bowl. Drizzle with lemon juice and gently toss to coat, which helps prevent browning and keeps them fresh-looking.
If desired, sprinkle the sliced bananas with a little granulated sugar to enhance their sweetness.
Spread a generous layer of vanilla pudding at the bottom of your serving dish or glass.
Arrange a layer of banana slices over the pudding, making sure they are evenly distributed and peek through the edges for a colorful presentation.
Add another layer of vanilla pudding over the bananas, smoothing it out gently with a spatula.
Repeat the layering process—bananas followed by pudding—until the dish is filled. Finish with a top layer of pudding and a few banana slices for decoration.
Sprinkle chopped toasted nuts over the top for crunch and visual appeal, if using.
Cover the dish and refrigerate for at least 1 hour to allow flavors to meld and the pudding to set.
Retrieve from the fridge and serve cold, with a spoonful of layered goodness in each serving.
