Preheat the oven to 350° and have ready a baking sheet lined with either parchment paper or a silicone baking mat.

In a medium-sized mixing bowl, whisk together the flour, baking soda, and salt. Set aside.

Add the melted butter, granulated sugar, and brown sugar to a large mixing bowl and mix on medium-high speed for no less than 2 minutes, until it begins to look like a paste.

Add the eggs one at a time, mixing well and scraping down the sides and bottom of the bowl after each addition. Then, add the vanilla and mix to combine.

Add the dry ingredient and mix on low until evenly incorporated. Scrape down the sides and bottom of the bowl again and mix. Add the chocolate chips and mix once more.

Drop small, tablespoon-sized mounds of dough on the baking sheet, spacing each cookie about 2" apart. Bake for 10 minutes. Remove from the oven and allow to cool completely.

Add the butter, powdered sugar, vanilla extract, and salt to a large mixing bowl mix with a handheld mixer, starting on low and working your way up to medium-high speed. Mix for 2-3 minutes until smooth and fluffy.