Add the browned butter, brown sugar, and granulated sugar to a mixing bowl. Whisk together for about two minutes. There will be little brown specks in your browned butter. This is normal and expected. Make sure to add them to the dough as well! We want it all in there.
Then whisk the eggs, vanilla extract, baking powder, baking soda, cinnamon, ginger, and nutmeg. Gradually add the flour into the bowl about 1 cup at a time. Use a spatula at this point as the dough will get very thick. Mix until completely combined. Make sure to scrape the inside of the bowl to ensure all the ingredients are mixed together.
Finally, add 1 cup of chopped pecans. I find it easier to use my hands to incorporate them into the dough. Save 1/2 cup of pecans.
Use a cookie scoop or your hands to scoop the dough into 2-teaspoon balls on a baking sheet. Chill the dough balls in the fridge for 20-30 minutes. Preheat the oven to 350 degrees Fahrenheit.
Once chilled, add the chopped pecans to the top of the dough balls and bake the cookies 6 at a time on a parchment paper-lined baking sheet. Make sure to separate the cookies by about 2 to 3 inches. Bake for 9-12 minutes or until the outside edges of the cookies are golden brown and the middle is still undercooked a bit. Leave them on the baking sheet until cooled, then transfer them to a wire rack.