Introduction
This manual provides essential information for the safe and effective use and care of your Vintage CorningWare Blue Cornflower 1 Quart Casserole Dish, Model A-1-B. This classic bakeware item is designed for versatile use in your kitchen.

Image of the Vintage Corningware Blue Cornflower 1 Quart Casserole Dish, featuring the iconic blue cornflower pattern on a white glass background. This dish is a 1-quart capacity, square shape, and does not include a lid.
Safety Information
- Always handle hot bakeware with oven mitts or pot holders.
- Avoid sudden temperature changes. Do not place a hot dish directly into cold water or onto a cold surface, and vice-versa, as this can cause thermal shock and breakage.
- Inspect the dish for any chips or cracks before each use. Do not use if damaged.
- This dish is designed for oven and microwave use. Refer to the "Operating Instructions" for specific usage guidelines.
Setup and First Use
- Unpacking: Carefully remove the casserole dish from its packaging.
- Initial Cleaning: Before first use, wash the dish thoroughly with warm, soapy water. Rinse completely and dry with a soft cloth.
- Inspection: Check the dish for any manufacturing defects or damage.
Operating Instructions
Oven Use
- The CorningWare casserole dish is oven safe. It can be used in conventional and convection ovens.
- Preheat your oven before placing the dish inside.
- Avoid placing the dish directly under a broiler element, as extreme direct heat can cause damage.
Microwave Use
- This dish is safe for microwave use.
- Ensure there are no metallic elements or accessories attached to the dish when using in a microwave.
Storage and Serving
- The dish can be used for serving directly from the oven to the table.
- Allow the dish to cool down before refrigerating or freezing leftovers.
Maintenance and Care
Cleaning
- Hand Washing: For best results and to preserve the finish, hand wash the dish with warm, soapy water and a non-abrasive sponge or cloth.
- Dishwasher Use: The dish is dishwasher safe. Place it on the top rack if possible to prevent chipping from other items.
- For stubborn food residue, soak the dish in warm, soapy water before cleaning. Avoid using abrasive cleaners, scouring pads, or metal utensils that could scratch the surface.
Storage
- Store the dish in a dry place.
- When stacking, place a soft cloth or paper towel between dishes to prevent scratching.
Troubleshooting
| Issue | Possible Cause | Solution |
|---|---|---|
| Dish breaks or cracks during use | Thermal shock (sudden temperature change) or impact damage. | Avoid extreme temperature changes. Do not use if chipped or cracked. |
| Food sticking to the surface | Insufficient greasing or high cooking temperature. | Ensure adequate greasing before adding food. Soak in warm, soapy water to loosen stuck food. |
| Stains or discoloration | Prolonged exposure to certain foods or hard water. | Use a non-abrasive cleaner designed for glass bakeware. A paste of baking soda and water can help. |
Specifications
| Feature | Detail |
|---|---|
| Model Number | A-1-B |
| Brand | CorningWare |
| Collection/Pattern | Blue Cornflower / Centura, Blue Floral On White, Coupe Shape |
| Material | Glass |
| Capacity | 1 Quart |
| Shape | Square |
| Dimensions (L x W x H) | 7 x 7 x 2 inches |
| Item Weight | 1.5 pounds |
| Oven Safe | Yes |
| Microwave Safe | Yes |
| Dishwasher Safe | Yes |
| Lid Included | No |
| Manufacture Year (Approx.) | 1957 - 1988 (Specific item: 1967) |
Support Information
For further assistance or inquiries regarding your CorningWare product, please refer to the official CorningWare website or contact their customer service. As this is a vintage item, specific support may vary.
Note: This manual provides general guidelines. Actual performance may vary based on individual usage and care.
