Insulated panels and methods of forming insulated panels are provided. According to the method, mold bulkhead and a sealing strip including a first anchor extension, a second anchor extension, and a panel cap are provided. The method also includes removably attaching the exterior face of the sealing strip to the interior mold surface on at least one of the plurality of mold sides, wherein the first anchor extension and the second anchor extension project into the interior mold volume, and wherein the sealing strip defines a sealed insulation zone. A curable building material is introduced into the interior mold volume to form a first slab. The first slab at least partially surrounds the first anchor extension. The method also includes inserting an insulation material layer into the interior mold volume, wherein the insulation material layer is at least partially within the sealed insulation zone. A curable building material is introduced into the interior mold volume adjacent to the insulation material layer to form a second slab. The second slab at least partially surrounds the second anchor extension. The method also includes the step of allowing the curable building material to cure to provide a cured insulated panel, wherein the panel cap defines at least a portion of at least one of the plurality of intermediate faces.