I start by peeling each banana carefully so it stays whole and smooth. I place them on a flat plate or board, giving each one space so the toppings don't smear into each other. If a banana looks a little too ripe or soft, I set it aside for banana bread instead, since firmer fruit slices much cleaner here.
Next, I break the dark chocolate squares into a microwave-safe bowl and heat it in short 15-second bursts, stirring between each one. I never rush this step because chocolate burns quickly if left too long. Once it's smooth and glossy, I let it cool for a minute before pouring.
I pour the melted chocolate evenly over two of the bananas, turning them gently so every side gets covered. While the chocolate is still wet, I sprinkle one banana with the colorful sprinkles and the other with chia seeds. This is the step my kids fight over the most.
For the remaining two bananas, I spread the nut butter generously using the back of a spoon until it's fully covering each one. Then I roll one banana in shredded coconut and the other in rice krispies, pressing gently so the coating sticks well. This version always reminds me of simple banana sushi recipe videos I've seen online, just made at home.
I place all four bananas on a lined tray and pop them into the fridge for about 10 minutes. If I'm short on time, the freezer works in half that time. This step matters because a firm coating slices so much more cleanly than a soft, melty one.
Once everything feels set, I slice each banana into bite-sized rounds, just like sushi pieces. I arrange them on a plate, sometimes with chopsticks on the side for fun, and serve immediately so the texture stays perfect.