Preheat the oven to 350°F (175°C). Prepare a muffin tin with muffin liners or grease them lightly.
In a mixing bowl, combine oats, baking soda, and cinnamon. Stir well to ensure even distribution.
In another bowl, mash bananas thoroughly. Add pumpkin puree, eggs, almond butter, and maple syrup (if using). Mix until very smooth and creamy.
Pour the wet mixture into the dry mixture. Stir gently until just combined – do not overmix!
Spoon the batter evenly into the prepared muffin tin, filling each cup about 3/4 full.
Place the muffin tray in the oven and bake for 20-25 minutes, or until a toothpick inserted into the center comes out clean.
Allow the muffins to cool in the pan for about 5 minutes before transferring them to a wire rack to cool completely. Enjoy your healthy breakfast on the go!