Instructions Slice and mash the bananas.Slicing and mashing bananas may seem like a task that can be easily completed by pretty much everyone, there's actually a technique that goes into it. Instead of simply slicing the whole fruit with a knife and mashing it with a fork, you must first place it on a cutting board and then cut it half lengthwise. Do it half at a time so the banana doesn't break right away. You then slice it horizontally into coins, resulting in perfect tiny banana pieces that you can be mashed with a fork with absolute ease. You can also use the leftover pieces later on as a topping to the finished product. Throw everything into the rice cooker.This is perhaps the easiest part of the process. While it's easy to make oatmeal using a microwave, you'll yield better results with a rice cooker, a tool that also happens to be a staple in your kitchen. It's a good thing that modern rice cookers have a slew of swanky functions, many of them having a "porridge" setting that automatically cooks oats the way it should be. For this recipe, just throw everything in, use a mixture of water and milk (or all milk) for a creamier result, turn the porridge setting on, and wait until it's done. This step typically lasts 20 to 25 minutes as it takes a while for most of the liquid to be absorbed. Top with extra banana, maple syrup, granola, or cinnamon.Once your rice cooker notifies you that your oatmeal is done, stir the mixture and then spoon it into a bowl. You may also want to cool it for a few more minutes to thicken even more before you begin eating. And to finish it off, add extra bananas, maple syrup, granola, cinnamon, or any other topping you may want to your heart's content.