Step 1

Preheat the oven to 375F.

Step 2

Leave 8 tbsp of butter out on the counter to soften. In a small saucepan, brown the other 8 tbsp of the butter. Do this by putting the pan on medium-low heat and letting the butter fully melt. Stir occasionally, until you see the milk solids start to separate and form flecks on the bottom of the pan. Let the butter fizz a bit and continue to stir. Continue this for about 2-3 minutes, or until the milk solids start to become a golden brown. Turn the heat to medium and stir consistently for 1 more minute, then remove the butter from the heat and stir until it is a deep, almost dark gold brown. Pour the browned butter into a bowl and whisk it to lower the temperature slightly. Set aside.

Step 3

In the bowl of a stand mixer, add the other 8 tbsp of softened butter. Pour the brown butter in the bowl as well. Then add the brown sugar and white sugar. Use the paddle attachment of the mixer to mix on medium. Mix for about 3-4 minutes or until the mix is light and fluffy.

Step 4

While the mixer is going, mash the banana and cinnamon together until the banana is a smooth purée. You don't want any chunks!

Step 5

Add the banana mixture and the vanilla extract to the mixer. Mix on medium speed for another 2-3 minutes or until the banana is fully incorporated.

Step 6

While the mixer is running, whisk together the flour, cornstarch, baking powder and salt in a bowl.

Step 7

Stop the mixer and add the dry ingredients a little at a time to the dough, using a spatula to mix it in until smooth. When the dry ingredients are fully incorporated, add in the chocolate chips and mix. The dough should be fluffy.

Step 8

Line a large baking sheet with parchment paper. Use a scale to measure out nine even 4 ounce scoops of dough. Place them evenly on the baking sheet, leaving plenty of room for them to spread.

Step 9

Bake at 375F for 13-14 minutes - a trick here is to take them out when they still look slightly underdone, just trust me!

Step 10

Smack the baking sheet on the counter a few times to help flatten the cookies. This is an imperative step! They'll come out a bit tall, but smack the sheet on the counter a few times and watch them spread like magic. Use a bowl or cup to swirl around the edges of the cookie, helping to form them into perfect circles.

Step 11

Let the cookies cool for 15 minutes before eating, then enjoy!