In a large bowl combine all dry ingredients and set aside until needed.
In a large bowl using a handheld electric mixer, or in the bowl of a stand mixer fitted with the paddle attachment, combine melted browned butter and both sugars and beat on medium speed for about 1 minute until well combined.
Add the Bourbon if using and the vanilla extract and mix for another minute. Then add eggs of flaxseed eggs one at a time, beating for a few seconds in between.
Turn the mixer off and using a wooden spoon or a sturdy spatula fold in the flour until is well combined. Then fold in the chocolate chips and buttered pecans.
Cover the bowl with a kitchen towel and refrigerate for about 4 to 5 hours. I prefer to refrigerate overnight but is up to you.
When ready for baking preheat the oven to 350 degrees and line up a large baking tray with parchment paper.
Using a large cookie scoop divide the dough into 2 or 3-tablespoon size balls. Place them onto the prepared baking tray leaving about 2-inches between each ball. Bake the cookies for about 10 to 12 minutes or until golden brown.