Oat Flour (Best Option)
1:1 by volumeOat flour contains enough starch and fiber to act as a binder in granola, helping to hold oats and nuts together during baking. Its mild flavor complements the natural sweetness of granola ingredients without overpowering them.
To ensure success, use finely ground oat flour and avoid overmixing to maintain cluster integrity. Slightly pressing the mixture before baking can improve cohesion.
Compared to all-purpose flour, oat flour produces a slightly chewier texture but preserves the crunch and cluster formation well, making it the closest functional substitute.