Prepare. Heat the oven to 350°F. Line a baking sheet with parchment paper.
Mix. Combine the mashed bananas, oil, vanilla and optional maple syrup. Stir in the oats, oat flour, walnuts, flaxseed, cinnamon, baking powder and salt.
Rest. Let the mixture stand for 10 minutes so the oats and flaxseed absorb moisture.
Shape. Scoop 12 portions onto the prepared pan. Shape into rounds and flatten to about ½ inch thick; the cookies will not spread much.
Bake. Bake for 14–17 minutes, until the bottoms and edges are lightly golden and the centers are set.
Cool. Cool on the pan for 10 minutes before transferring to a rack. The cookies remain soft and tender.
A friendly note: These recipes are offered for general wellness inspiration. Individual nutrition needs and food restrictions vary; ask your healthcare professional for personalized guidance.
