Orla Walsh is a Registered Dietitian, owner of Orla Walsh Nutrition, former performance nutritionist to the Irish Olympic team and regular contributor for the Irish Independent newspaper, RTE and Newstalk FM.
Mash 2 bananas in a bowl. With a fork, fold in 1 cup of oats, 1/2 cup of raisins, 1/2 cup of walnuts and 2 tbsp peanut butter. Mix until all the oats are wet. Make into small biscuit shapes. Place on a baking tray and cook at 170 degrees C for about 12 minutes.