3tablespoonsunsalted buttermelted, plus more for the skillet
¼cupbrown sugar
2tablespoonsgranulated sugar
1largeegg yolk
½teaspoonvanilla extract
½cupall-purpose flour
⅛teaspoonbaking soda
⅛teaspoonsalt
⅓cupchocolate chips
Instructions
Preheat the grill for medium (350°F) indirect heat. I prefer to use heat on either side of the grilling zone for even cooking, but if you can only have heat on one side, be sure to rotate the skillet once during baking.
Butter a 6-inch cast iron skillet.
Combine the melted butter, brown sugar, and granulated sugar in a medium bowl.
Stir in the egg yolk and vanilla and mix well.
Add the flour, baking soda, and salt, and mix just until combined and no streaks of white remain. The dough will be thick. Fold in the chocolate chips.
Press the cookie dough into the prepared skillet.
Grill over indirect heat until the edges of the cookie are browned and the center of the cookie is slightly puffed and just set, about 20 minutes. Remove from heat and serve warm.
Video
Notes
Grill over indirect heat--Keep the skillet over indirect heat while grilling. Direct heat may cause the bottom of the cookie to burn.
Don't peek--Avoid lifting the lid on the grill as much as possible as the temperature will fluctuate each time it's opened.