Preheat oven to 180C and line a 12 hole muffin pan with paper cases or a 24 hole muffin pan with paper.
Sift together flours, baking powder and cinnamon. Add oats.
In a separate bowl whisk together the sugar, honey, eggs, yoghurt and melted butter.
Combine the dry and wet mixtures together until just combined. Do not over mix.
Fold through the blueberries and walnuts. Spoon into muffin pan and bake for 20 minutes or until golden.
Leave to cool on a wire rack.