Crab Casserole is a creamy and savory seafood dish featuring tender crab meat enveloped in a rich, egg-thickened sauce and finished with crunchy bread crumbs. A staple of mid-century American seafood suppers, this casserole blends classic pantry ingredients like mayonnaise, butter, and hard-boiled eggs to create an elegant yet comforting baked dish. Often served in crab shells or a casserole dish, it’s a nostalgic favorite that balances simplicity with coastal flavor.