Preheat oven to 350 degrees Fahrenheit. Line cookie sheet(s) with parchment paper and set aside.
Make the Cookie Dough: In a mixing bowl, whisk together flour, baking soda, cinnamon, and salt.
1 ½ cup all-purpose flour, ½ teaspoon baking soda, ½ teaspoon ground cinnamon, ¼ teaspoon kosher salt
In another bowl, vigorously stir together the butter, brown sugar, granulated sugar, egg, vanilla, and bourbon until smooth (about one minute), using silicone spatula or kitchen spoon.
½ cup unsalted butter, ½ cup brown sugar, ¼ cup granulated sugar, 1 egg, 1 teaspoon vanilla bean paste, 1 teaspoon bourbon whiskey
Add flour mixture to butter and sugar mixture and stir until a uniform dough forms. Stir in the chocolate and walnuts until incorporated. Do not over mix.
1 cup dark, semi-sweet, or bittersweet chocolate chips, ½ cup dark, semi-sweet, or bittersweet chocolate bar, 1 cup walnut pieces
Bake the Cookies: Use cookie scoop to portion dough onto lined cookie sheet(s), leaving at least two inches between each scoop of dough. Bake for 10-12 minutes or until edges are set and golden brown.*The large amount of mix-ins in this cookie dough can make it awkward to scoop. If any of the chocolate or walnut bits fall out or are sticking out, just press them back into the dough. You especially don't want walnut pieces jutting out as they will burn in the oven. Finish and Serve: Allow cookies to cool and set on pan(s) for about 5-10 minutes before handling. Sprinkle with flaky salt (optional) and serve warm.
flaky sea salt