Add all the ingredients for the cinnamon miso oatmeal to a medium pan: 2 cups liquid, 1 cup rolled oats, 2 tbsp maple syrup, 1 tbsp miso paste, 1/2 tsp cinnamon. Stir until well combined.
Set the pan over medium heat and bring to a boil. Continue to stir while the mixture boils. Let it cook until the oatmeal has thickened to your desired consistency for oatmeal (they will continue to thicken slightly once they cool down), about 5 minutes.
Add the oatmeal to a bowl and top with tahini, sliced banana, and sesame seeds. Enjoy!