Preheat the oven to 170°C degrees, grease and flour a 21cm cake tin.
Smash the bananas and measure out 1 ½ cups.
Set out a large mixing bowl. Add the flour, oats, brown sugar, apple pie spice, salt, baking powder, and baking soda. Mix well. Then mix in the mashed banana, melted butter, eggs, milk, and vanilla extract. Mix until smooth.
Pour or scoop the batter into the prepared pan. Sprinkle the top with extra oats if desired. Then bake for 45-60 minutes, until a toothpick inserted deep into the center comes out clean.
Allow the bread to rest in the pan for 15 minutes. Then lift is out by the edges of the parchment paper. Wait until the loaf is fully cooled to cut.
