Rival Crock-Pot stoneware slow cooker.

an electric countertop cooking appliance used for simmering food at a low temperature over an extended period—perfect for soups, stews, roasts, chili, and more. The one in your picture appears to be a vintage or older model with a fruit-and-pear decorative pattern, likely from the 1990s or early 2000s.

eBay