Grease your muffin tins (I use butter), and preheat your oven to 200°C/ 400°F.
In a small (but not too small!) pot, combine the dates and water and heat to boiling on high heat. As soon as the water boils, add the baking soda, and stir to combine. Marvel at the foamy science that is happening and do not be alarmed, just make sure your pot is large enough that it won't foam over. Set mixture aside to cool.
1 ½ cups chopped pitted dates, 1 cup water, 1 teaspoon baking soda
In a stand mixer, mix together mashed bananas and butter or olive oil until it is light and frothy.
2 large very ripe bananas, 3 Tablespoons of soft butter OR neutral-flavoured oil
Add the eggs and mix to combine them.
2 large eggs
Stir in milk, bran, and oats, and set aside.
1 cup milk, 1 ½ cups wheat bran, ½ cup rolled oats
Add the dates to the wet mixture, and stir to combine.
Add the flour, baking powder and salt. Mix until just combined.
2 cups whole wheat flour, 1 Tablespoon baking powder, ½ teaspoon salt
Mix in diced banana and walnuts.
1 banana, 1 cup walnuts
Spoon the mixture into prepared muffin tins.
Bake for 20 - 25 min, until tops are golden and a knife inserted into the middle of one of the muffins comes out clean.