Pre-heat oven to 175 degree Celcius.
In a bowl, mix together oat bran, milk, bananas and vanilla extract and let the mixture sit for 10-15 minutes. This will help soak the oat bran so that the muffins are not dry.
In another bowl, combine flour, baking powder, baking soda, cinnamon powder (if using), cranberries and salt. Set aside.
In a different bowl, whisk together butter, honey and maple syrup.
Once the bran mixture has soaked for 10 minutes, add the butter mixture. Mix well. Finally add the flour mixture and mix just until combined.
Scoop mixture into lined muffin tins. These muffins don't rise too much so you can fill till the top. If using mini tins, bake for 12-15 minutes. If using regular sized muffin tins, bake for 18-20 minutes.
Once baked, let the muffins cool for a few minutes before turning them out on a wire mesh.
This recipe makes 15 mini muffins or 6 large muffins.