In a stand mixer or large bowl, mix together all of your dry ingredients including tiger nut flour, cassava flour, coconut flour, baking soda and salt.
Then add all of your wet ingredients (other than the blueberries) to your flour mixture and mix everything together thoroughly. Make sure to melt your coconut oil and add it into the bowl right before you are going to mix everything together. Otherwise it may start hardening up as it comes in contact with other cold ingredients in the bowl.
After everything is mixed together, then you can add your blueberries. Pro tip: mix the blueberries in by hand with a spoon. This way they won't break apart and make your muffin batter blue and purple. Or if you don't care about that (I don't!), mix the heck out of them in your stand mixer!
Line your muffin tin with 12 muffin liners, and using a spoon scoop out the batter evenly amongst the 12 muffin cups.
Bake your muffins for roughly 30 minutes or until a toothpick comes out clean.
Set them up to cool and once they come down to room temperature, transfer them into an airtight container in the fridge or freezer. Enjoy!