It depends on the specific model of your Hamilton Beach crock pot. Most Hamilton Beach crock pots have removable stoneware inserts, which are typically safe for use in the oven. However, it's important to check the user manual or manufacturer's instructions that came with your crock pot to ensure compatibility with oven use.
Generally, stoneware inserts made for slow cookers are designed to withstand high temperatures, making them suitable for oven use. They can typically withstand temperatures up to 400°F (204°C) or higher. It's essential to verify the maximum oven temperature recommended by the manufacturer to avoid any potential damage or safety hazards.
If you don't have access to the user manual or specific instructions, I would recommend reaching out to Hamilton Beach customer support directly to confirm whether your particular crock pot insert is oven-safe and up to what temperature it can be used.