Corning Ware Cornflower Casserole P-1-B 1 Qt Square with Lid – White & Blue. This beautiful Corning Ware Cornflower Casserole (model P-1-B) features the classic Blue Cornflower design, making it a must-have for any kitchen or collector. With a 1-quart capacity and a square shape, this versatile casserole dish is perfect for baking, serving, and storing your favorite dishes. It also comes with its original lid to keep your food fresh and warm. This timeless piece is perfect for cooking, serving, or as part of a vintage kitchenware collection. Whether you’re preparing a meal or displaying it as a collectible, this Corning Ware casserole dish adds both function and style to any setting. Add this charming piece to your collection today!