Preheat oven to 375°F.
Melt the chocolate bars in the oven on a lined baking sheet for 5 minutes. Spread the melted chocolate and freeze for 15 minutes.
Prepare a muffin tin with paper liners.
Sift together the flour, baking soda, baking powder, cinnamon & matcha into a large bowl. Set aside.
In another bowl, mash the bananas (with a fork), add in the eggs, oil, coconut yogurt and give it a whisk.
Add in the coconut sugar and vanilla extract to the banana mixture and whisk to combine.
Add the wet ingredients to the dry ingredients and fold with a spatula to combine. Don’t overmix.
Lastly, add in the hazelnut chocolate chunks and lightly fold into the batter with a spatula.
Scoop into the muffin liners, about ¾'s full.
Bake at 375°F for 20-22 minutes, or until a toothpick inserted comes out with the slightest crumbs clinging on.
Let cool on a cooling rack and enjoy!