Preheat your oven to 350°F (175°C).
Line an 8×8-inch baking pan with parchment paper.
In a food processor or high-powered blender, add drained chickpeas, nut butter, maple syrup (or honey), and vanilla extract. Blend until smooth and creamy.
Sprinkle in baking powder, cinnamon, salt, and coconut or oat flour. Blend again until fully combined.
Scoop the batter into the prepared pan and smooth the surface evenly.
Mix the cinnamon and sugar topping in a small bowl and sprinkle it evenly across the top of the batter.
Bake for 20–25 minutes until the edges are lightly golden and a toothpick comes out mostly clean.
Allow the blondies to cool completely before slicing.
