Make the Best Giant Chocolate Chip Cookie Recipe: bake a skillet-sized, chewy-centered cookie with glossy chocolate pockets.
Warm the kitchen by setting the oven to 350°F (175°C) so it's ready when the dough is assembled; this is the very first action and gives you the breathing room to prepare everything else while the oven comes to temperature.
In a large mixing bowl, beat the softened unsalted butter with the packed brown sugar and granulated sugar until the mixture is light, airy, and pale—scraping the bowl occasionally. Working the fats and sugars until they hold tiny aerated ribbons is what creates a tender, slightly chewy crumb in the finished cookie.
Beat the eggs into the creamed butter one at a time, allowing each to fold in fully, then stir in the vanilla extract until the batter looks smooth and glossy. The batter will loosen a touch and take on a satiny sheen from the eggs and vanilla.
In a separate bowl, whisk together the all-purpose flour, baking soda, and salt so the leavening and seasoning are evenly distributed; this small step prevents pockets of soda or salt and keeps the dough uniform.
Gradually add the dry mixture to the butter-egg mixture, folding gently until just combined. The dough should be thick, slightly sticky, and cohesive—avoid overmixing to preserve tenderness and chew.
Finish the dough by folding in the semisweet chocolate chips until they're evenly distributed, the chips nestling into the thick dough and creating visible dark speckles throughout the pale, sandy batter.

Spread the cookie dough evenly into a large, well-greased cast-iron skillet (or a baking pan if you prefer), smoothing the top with a spatula so it bakes into one giant cookie with an even thickness and consistent edge color.
Bake in the preheated oven for 25 to 30 minutes, watching for golden-brown edges and a set center; the exterior should feel firm while the interior remains soft and slightly underbaked for that signature chewy texture.
Allow the giant cookie to cool on the surface until it's safe to handle, then slice into wedges and serve warm so the chocolate chips are glossy and the interior feels tender; cooling briefly will help the cookie keep its shape when cut.
