✓ Place butter in a small saucepan over medium heat and stir until foamy, then cook until golden brown.

✓ Preheat a large cast-iron skillet over medium heat for 5 minutes.

✓ Pour browned butter into the heated skillet.

✓ Whisk together flour, baking soda, and salt. Set aside.

✓ Beat brown sugar and granulated sugar in a mixing bowl until light and fluffy, then stir in cooled brown butter, egg, and vanilla extract.

✓ Gradually add the flour mixture to the wet ingredients and fold in chocolate chips.

✓ Spoon the dough onto the skillet and cook for 5 minutes, then reduce heat and cook for another 2-3 minutes until edges are set but center is gooey.

✓ Remove from heat and let cool on the skillet before serving.