• Preheat the oven to 350° F.
• Line a baking sheet with parchment paper and set aside.

For the Brown Butter

• Melt butter in a medium sauce pan on medium heat. Stir the butter to make sure it melts evenly. Once the butter is completely melted, it will start to foam up. Continue stirring the butter. As it cooks, it will start to change into a deeper color. This could take 6-8 minutes.
  ½ cup (1 stick) salted butter
• You'll start to notice a nutty aroma and the butter will begin to have brown specs at the bottom of the pan. Continue stirring and remove from the heat and pour into a heat-proof bowl and let cool at least 10 minutes before continuing with recipe. The entire process of browning butter from start to finish should not take more than 10 minutes on medium heat.

For the Cookies

• Once brown butter is cooled, add the sugars (both brown and granulated) into the bowl of the brown butter, and mix with a spatula. Add the egg, vanilla extract and stir until combined. Then add the banana and stir. Add the rolled oats and mix completely.
  ½ cup (100g) dark brown sugar, ½ cup (100g) granulated sugar, 1 large egg, ½ teaspoon vanilla extract, 1 small very ripe banana (80-90g), mashed, ¾ cup (60g) rolled oats
• Slowly add the dry ingredients and mix until just combined. Add the chocolate and pecans and mix until just incorporated. Don't over mix.
  1½ cup (180g) all purpose flour, ½ teaspoon salt, ½ teaspoon baking soda, ½ teaspoon baking powder, ¾ teaspoon ground cinnamon, ¼ teaspoon ground nutmeg, ½ cup pecans, ½ cup semi-sweet chocolate chips
• Optional: Chill the dough in the fridge for 30 minutes (this will help develop more flavor, and reduce spreading).
• Scoop cookie dough using a large cookie scoop (3 tablespoon scoop). Place cookie balls on baking sheet, making sure to spread them apart at least 2". Top with extra pecans and chocolate chips.
• Bake for 11-13 minutes, depending on desired crisp.

  If you make them smaller, check at 10 minutes.
• Let cool for a few minutes on baking sheet and then transfer to cooling rack.