Preheat the oven to 200°C/400° F. Place a rack in the center of the oven.

In a large bowl, add the flour, baking powder, baking soda and salt. Mix the content and set aside.

Place the butter and sugar in a large mixing ball. With the mixer on high speed, mix the butter and sugar until it is light and fluffy.

Add the eggs one at a time and mix for 30 seconds. Scrape down the sides of the bowl with a rubber spatula. Add the mashed bananas and the banana extract and mix just to incorporate.

Reduce the mixer speed to low, add half of the buttermilk, beat for 5 seconds and add half of the flour mixture. Add the remaining buttermilk, mix for 5 more seconds and add the remaining flour mixture, beat for 10 seconds just to homogenize the mixture, don’t over beat!

Fold in the chocolate chips, using a spatula, make sure they are evenly spread out in the muffin batter

Line a muffin tin with paper cases. Spoon the mixture evenly into the muffin cases, filling 2/3 each cup. Add some extra chocolate chips to the muffins before baking.

Bake for 15 minutes, or until you insert a toothpick in the center of each muffin, and it comes out clean.