Preheat the oven to 400 F and line a loaf pan with parchment paper lightly greased with coconut oil.
Using a blender, blend the yellow plantain and bananas until fully mashed. Set aside.
Combine the tigernut flour, coconut flour, baking soda, and coconut sugar and mix.
Fold in the plantain and banana mixture, coconut oil, and lemon zest to form a dough. Carefully mix in the blueberries, being careful not to pop them.
Pour the batter into the prepared loaf pan and bake in the preheated oven for 35-40 minutes or until a toothpick can be inserted and comes out clean.
Transfer to a cooling rack and allow to cool completely.
For the glaze, combine the melted coconut butter, oil, honey, and lemon juice and stir to combine. Pour over the bread and top with lemon zest. Allow to harden in the fridge for 5-10 minutes before slicing and serving.
Notes
The best method to melt coconut butter is a double boiler method to avoid burning.All nutrition facts are estimations and will vary.