Add all of the dry ingredients in a bowl and whisk together to combine. Set aside.
Wet Ingredients
In another bowl, add in all of the wet ingredients except cubed pineapple. Whisk to combine.
Then pour the wet ingredients into the dry ingredients. Mix everything just to combine. Don't over mix to avoid hard, dense muffins. Lastly add in cubed pineapple and fold everything together just to combine. Divide the batter evenly into 6 muffin paper cups.
Bake in preheated oven at 400ºF (200ºC) for 15 minutes or until fully cooked. Once taken out from the oven you can sprinkle some coconut flakes on top of the muffins. Cool completely on a rack. Enjoy!
Notes
Coconut Buttermilk: add 1 ½ teaspoon lemon juice to ⅓ cup coconut milk and leave for 10 minutes before using.