Combine flour, baking soda, baking powder, and sea salt in a bowl. This step ensures your cookies have the right texture and rise just perfectly.
With a stand mixer, beat the cold cubed butter with granulated sugar and brown sugar. The mixture should turn smooth and creamy without over-warming the butter.
Beat in the eggs one at a time, followed by the vanilla extract. This step creates a delicious base that blends perfectly with the dry ingredients.
Gradually mix in the dry ingredients until just combined. Stir in the chocolate chips and chunks for that gooey, melty magic!
Using a cookie scoop or your hands, make 113g (1/4-pound) dough balls. Place them on lined baking sheets, spacing them generously apart. For extra flair, press a few chocolate chunks on top of each ball.
Bake in a preheated oven at 375°F for 15-20 minutes. Adjust the time based on how gooey or chewy you like them. Sprinkle sea salt on top as soon as they come out for an elevated flavor.