The Delicious Benefits of Cast-Iron, Now In Smaller Sizes. Pre-seasoned cast-iron skillets heat evenly on a warp-free surface, and cleanup is easy! Mini skillets are ideal when cooking for one or two—there’s no need to drag out a big, heavy pan. Choose round, square or set of each. Round is 10 1⁄2"L x 6 3⁄4"W x 1 1⁄4"H with a 5 1/2"dia. cooking surface. Square is 9 3⁄8"L x 5 5⁄8"W x 1 1⁄4"H with a 5 1/8"sq. cooking surface. Hand wash.