In a bowl, whisk together the milk, maple syrup, flour, baking powder, cinnamon, and salt.
Mash up the banana and add that to the mix. Stir well.
Pour some of the batter into a shallow dish (with sides), now add a slice of bread and pour more mixture over the bread, then lift or flip the bread over to make sure both sides are coated.
Heat a drizzle of coconut oil in a large frying pan over medium heat. When the pan is hot, add the bread slices and cook for a few minutes per side, until golden brown. Repeat.