Preheat oven to 350 F
Blend ½ cup oats into a flour consistency
In a large bowl, mash bananas. Add in peanut butter, applesauce, vanilla, cinnamon, flaxseed, and chia seeds
Stir in whole oats and blended oat flour
Gently fold in blueberries
Spread mixture in parchment lined 8x8 baking pan
Bake for 22-28 minutes, until light golden, or set in the center
Store in airtight container for 4-5 days or freeze for up to 2 months