Preheat your oven to 350℉. Line a 12-hole muffin pan with paper or silicone liners, or lightly grease.
In a large mixing bowl, add the whole wheat flour, baking soda, salt, and nutmeg. Whisk until well combined.
Add the mashed banana, coconut sugar, organic cane sugar, dairy free butter, dairy free milk, and prepared egg replacer.
Gently fold half of the chopped macadamia nuts into the batter.
Evenly distribute the batter between the 12 muffin cups.
Use the remaining chopped macadamia nuts to top off the batter in each of the 12 muffin cups. Transfer the muffin pan to your preheated oven and bake until the tops are lightly golden and a cake tester inserted in the center comes out clean, about 25 minutes.
Once baked, let the muffins cool in the pan for about 5 minutes. Then remove them and place on a wire rack to cool completely.
Serve warm with vegan butter, or any way you like!