Preheat over to 350. Grease a loaf pan.

Grind the oatmeal and cashews separately, set aside.

In a large bowl combine the cashews, oatmeal and bananas, add the eggs, yogurt and honey, with a spatula mix until well incorporated. Fold in flour, baking powder, when all mixed in fold in carefully the blueberries.

Bake for 40-50min or until a tooth stick inserted in the middle of the cake comes out clean or with just a few crumbles on.

Let cool completely before glazing.

In a bowl, combine sugar and grapefruit juice, mix until all the sugar is dissolved.

Pour the glaze on top of the cake, let it harden before serving.