Pre-heat oven to 350 degrees and spray an 8 x 8 baking pan with non-stick cooking spray.
In a large bowl, toss together oats, brown rice cereal and chia seeds.
In a medium bowl, mash together bananas with honey, vanilla, salt, cinnamon and nutmeg.
Add banana mixture to the oat mixture and stir until fully incorporated. Add walnuts and stir again until well combined.
Pour bowl into the prepared baking dish and use a rubber spatula to press mixture firmly into the pan. Bake for 25-30 minutes or until lightly browned. Let cool completely before slicing into bars.
Notes
Recipe is slightly adapted from Cupcakes and Kale Chips*Honey is not technically vegan. To make vegan, replace with maple syrup, agave or dates.