Preheat oven to 350Mix together flax seed and almond milk and set aside for a few minutes to thicken.In a small bowl combine dry ingredients (flour, baking powder, salt, coconut and sugar). Add flaxseed mixture and yogurt. Mix well until well combined. Stir in pineapple.Divide evenly between 10-12 muffin cupsSprinkle tops with coconut. Bake at 350 for 18-20 minutes. Coconut on tops of muffins will be lightly browned and muffins will be springy when you press them on top.