Preheat your oven to 400 °F degrees and line 12 muffin cups with silicone muffin liners or spray the cups with non-stick cooking spray. Set aside.
In a small bowl, prepare your flax egg by whisking 1 tablespoon of ground flaxseed with three tablespoons of water. Set aside to thicken while you prepare the rest of the batter.
Add in the remaining ingredients, including the chopped nuts and thickened flax egg, and mix until just combined.
Evenly divide the batter among the 12 muffin cups and bake for about 20-25 minutes, or until a toothpick inserted into the center of a muffin comes out clean. Allow the muffins to cool slightly before removing from the pan to cool completely on a wire rack.
Store the muffins in an air-tight container outside of the fridge for 1-2 days or in the fridge for up to a week. These taste best when warmed slightly before serving.
Notes
*You can use cane sugar in place of the coconut sugar. Additionally, you can also decrease the sugar to ½ cup for a slightly less sweet muffin.