Step 1

Whisk together the mashed banana, melted butter, brown sugar, granulated sugar, and vanilla.


Mix together the flour, salt, baking soda, baking powder, and cornstarch in a separate bowl.

Mix Dry Ingredients

Step 2

After you're going to want to add your sugars and vanilla, then mix in for two minutes until completely combined. Once you've done that go ahead and add the egg and egg yolk.

Add the Chocolate Chips

Step 3

Cover the cookie dough and refrigerate for at least 1 hour.

Roll and Chill

Step 4

Bake for 9-11 minutes at 350 degrees F


Step 5