Instructions
1-Preheat your oven to 350°F (180°C) and: Preheat your oven to 350°F (180°C) and line a baking sheet with parchment paper.
2-Melt your unsalted butter in the microwave: Melt your unsalted butter in the microwave or on the stovetop. Pour it into a medium mixing bowl and let it sit for a few minutes to cool down to room temperature so it doesn’t cook the egg.
3-Add the brown sugar, white sugar, fine: Add the brown sugar, white sugar, fine sea salt, and vanilla extract to the cooled butter. Whisk them together thoroughly until smooth.
4-Add the room-temperature egg yolk and whisk: Add the room-temperature egg yolk and whisk vigorously until the mixture looks glossy, thick, and well-combined.
5-Sift or pour the all-purpose flour and: Sift or pour the all-purpose flour and baking soda into the bowl. Use a rubber spatula to gently fold everything together. Stop mixing the exact moment you no longer see streaks of white flour.
6-Fold in your chopped chocolate chunks or: Fold in your chopped chocolate chunks or chips until they are evenly distributed through the dough.
7-Scoop the dough into 8 equal balls: Scoop the dough into 8 equal balls using a cookie scoop and place them onto your prepared baking sheet. Bake for 9-11 minutes until the edges are golden brown, but the centers still look slightly soft.
8-Let the cookies sit on the hot: Let the cookies sit on the hot baking sheet for 5 minutes to finish setting. Sprinkle with a little flaky sea salt if desired, then transfer to a wire rack or serve warm!