Any kind of a smaller oven-safe skillet will work. Cast iron is great as it holds heat and bakes evenly. Look for well-priced cookie skillets at HomeGoods TJ max, Cost Plus World Market, and online. Mini Skillets: Use smaller skillets, like a 6 inch mini skillet, preferably a cast iron pan, or small mini skillets as they are labeled. Large Cookie Sheet Pan: Spray with coconut oil non-stick spray or lay a piece of parchment paper on your sheet pan to help the cookie bake evenly and easier clean up. Giant Cookie: You can make one gigantic cookie and use an oven safe large skillet or cast iron pan.