Gather all ingredients and tools needed for the sundae.
Scoop 1 cup of vanilla ice cream into a serving bowl.
Drizzle 1/4 cup of chocolate syrup over the ice cream.
Add sliced bananas on one side of the ice cream if using.
Top with another scoop of ice cream.
Pour an additional layer of chocolate syrup over the second scoop.
Add a generous amount of whipped cream on top.
Sprinkle chopped nuts and colorful sprinkles over the whipped cream.
Finish with a maraschino cherry on top.
Serve immediately and enjoy your homemade sundae!