The unique stoneware is also oven-safe for use in conventional ovens to cook and warm. With portability in mind, the Casserole Crock™ uses our Cook & Carry™ locking lid system for easy transport, without spills or mess. It also makes entertaining easy so you can prepare a casserole or dish in advance, then let it slow cook. You can enjoy your guests or get to other party preparations. When your kitchen oven is working on overload, the Crock-Pot® Casserole Crock™ is a lifesaver by freeing up space in the oven.