2 ½Tbsp(30 gr) vegetable oil(corn, sunflower, canola.)
1tspbaking powder
1tspbaking soda
1tspvanilla extract
½tspsalt
Instructions
Heat the oven to 180 ° C / 350F.
In a bowl, sift the flour together with the baking powder, baking soda, and salt.
Put the bananas in a separate bowl and mash until you get a puree with almost no lumps.
Add the eggs, sugars, vanilla extract and oil to the bowl with the bananas. Whisk until all ingredients are combined.
Add the flour to the bowl with banana mixture and fold with a spatula until everything is combined. Mix in the nuts.
Fill in the muffin cups to ⅔ of their capacity.
Put a teaspoon of Nutella in the center of each muffin. Carefully swirl with a toothpick but taking care not to swirl down the chocolate, you want those swirls to stay on top.
Bake for about 18 minutes or until a toothpick inserted into center of muffin comes out clean.