Preheat the oven to 170°C. Line a medium bread tin with parchment paper or paper basket.
Mash the bananas with a fork or stick-blender, then add the eggs and oil. Combine well, then add the flour, oats, cinnamon and sugar. Combine well.
Add the milk and combine.
Fold in the chopped hazelnuts and dates. Stir,until well combined. Add more milk if the batter is too thick.
Transfer the batter into the tin, then even out the top.
Bake in the oven for 45-50 minutes, or until the top is golden and an inserted skewer comes out clean.
Let it cool in the tin, then finish it off to your liking with frosting, icing, chocolate spread or icing sugar.