Leftover Chicken & Dumpling Casserole

This chicken and dumpling casserole gives leftover roast or rotisserie chicken a second life as something completely different. Instead of a stovetop stew, the gravy gets built in a saucepan, poured into a 9×13 dish, then topped with biscuit-mix dumplings that bake into pillowy clouds.

The gravy builds simply. Onion, celery, and garlic soften in butter, then flour, sugar, salt, basil, and pepper go in to make a quick roux. Chicken broth turns it silky, and frozen peas add green sweetness without going mushy. The cubed cooked chicken folds in last so it just warms through rather than overcooking.

The dumplings are the trick that keeps it weeknight-friendly. Baking mix, dried basil, and milk stir together in seconds and drop in spoonfuls onto the casserole. They steam-bake under a covered finish so the bottoms soak up gravy while the tops stay tender and golden.

Kitchen Tips

• The 30-minute uncovered bake browns the dumpling tops; the 10 minutes covered finishes the centers. Skip the covered phase and you’ll get gummy middles.
• Use room-temperature broth so the gravy heats faster and doesn’t seize when it hits the cold flour.
• Dropping dumplings on the bubbling gravy is the right move. Cool casserole means the dumpling bottoms stay raw.
• Rotisserie chicken works beautifully here. Pull the meat in chunks rather than shredding for better texture against the gravy.

Variations

• Stir in a cup of sliced mushrooms with the onion and celery for an earthier base.
• Swap peas for frozen mixed vegetables to clear out the freezer.
• Add a splash of dry sherry or white wine to the gravy with the broth for a slightly fancier weeknight version.