2. Whisk together the melted butter, eggs and vanilla in a small bowl. Add the egg mixture to the flour mixture and stir until well combined.
3. Use your hands to roll heaped tablespoonfuls of the oat mixture into balls. Place the balls 5cm apart, on the prepared trays. Press 3 choc bits into each ball, then flatten slightly.
4. Bake in oven for 15 minutes or until golden brown. Transfer to a wire rack to cool completely.