Whisk wet ingredients together - mashed banana, sugar, syrup, vanilla, apple cider vinegar, oil, and milk
In a separate bowl whisk dry ingredients - oat flour, cocoa powder, baking powder, baking soda, and sea salt
Add dry ingredients to wet, and combine
Fold in chocolate chips
Pour into 9x5 loaf tin lined with parchment paper
Sprinkle with more dark chocolate chips
Bake at 350 for 55-60 minutes
Allow to cool 15 minutes, then use the parchment paper to lift the sides up and place on wire cooling rack until completely cool before slicing (if you try to cut while still warm it is more likely to crumble)
Enjoy at room temp up to 3 days, or store in an airtight container in the fridge for up to a week
You can also free it for up to 3 months!