Today we start with a recipe of brownies without butter and completely gluten free, with coconut flavor. The base, instead of the flour, is made from green plantain, which creates a low glycemic index cake . For those who have difficulty finding the green plantain (you can buy it here) it can be replaced with the same amount of sweet potatoes.
These brownies are paleo friendly, gluten-free, without many carbohydrates, also perfect for those who are diabetic but do not mind a dessert. They are very easy to do. Here is the recipe.

BROWNIES WITHOUT COCONUT BUTTER

Ingredients for 8 brownies without butter: 
A large green plantain, or alternatively 200 grams of sweet potatoes (raw weight)
An average egg
100 grams of grated coconut flour
100 grams of Truvia (can be replaced with the same amount of sugar as cane or normal)
60 grams of bitter cocoa (I used Perugina Fondente)
a pinch of salt
150 ml of vegetable milk (coconut, soy, almond) or 
vanilla flavored water

Procedure: cut the plantain (or sweet potatoes) into pieces and boil it in water for about 30 minutes. Drain well and put it in a blender. Add the grated flour, cocoa, Truvia, salt, vanilla. Run the blender and mix everything for a minute. Then add the egg and milk slowly. Operate again for a few seconds.
Take a 16 × 16 cm square baking dish (or rectangular with the longer side less than 20 cm) and line it with parchment paper.
Spread the mixture with the help of a spatula to make it uniform.

Put the dish in a preheated oven at 175 ° and cook for 25 minutes.
Allow to cool and cut your unsalted brownies into 8 squares.