1-Cream butter and sugars in the bowl: Cream butter and sugars in the bowl of a stand mixer fitted with the paddle attachment or in a large bowl using a hand mixer until pale and creamy, about 3 minutes. Add egg and vanilla and beat until combined.
2-In a separate bowl, whisk together the: In a separate bowl, whisk together the flour, baking powder, baking soda, salt, and cinnamon. Add dry ingredients to wet ingredients and beat until combined. Mix in chocolate and walnuts.
3-Scoop out the cookie dough using a: Scoop out the cookie dough using a medium size scoop (2 tbsp) and place the dough balls side by side on a lined baking sheet. Top with extra chocolate and walnuts and refrigerate for 30 minutes.
4-Preheat the oven to 350 degrees F: Preheat the oven to 350 degrees F.
5-Arrange 6 cookies on a parchment lined: Arrange 6 cookies on a parchment lined baking sheet, leaving at least 2 inches between each cookie. Bake for 10-12 minutes, or until edges are golden. As soon as cookies come out of the oven, use a round cookie cutter to make perfectly round cookies. Top with sea salt. Continue with remaining cookie dough and enjoy!