Mississippi Chicken Casserole with Cheesy Pasta in One Dish

Creamy, tangy and unapologetically cheesy, this Mississippi chicken casserole turns the classic pepperoncini-butter chicken into a complete one-dish dinner. Shredded chicken and elbow pasta are folded through a ranch-spiked cream sauce, blanketed with cheddar and mozzarella, and baked until the top bubbles and the cheese pulls in long strands. Every element cooks in sequence, then finishes together in a single baking dish.

Mississippi chicken is famous for a reason: chicken cooked with butter, ranch seasoning and tangy pepperoncini until it shreds at a touch. This casserole keeps that flavor combination but builds it into a baked pasta dinner that feeds a table from one dish. The chicken is seared and roasted until just done, then shredded.

A quick pan sauce of butter, cream cheese, sour cream, chicken broth, ranch seasoning and pepperoncini comes together in the same skillet, so nothing — and no flavor — is wasted. Pasta boiled one minute short goes in next, the whole thing is piled into a baking dish under cheddar and mozzarella, and the oven does the rest. Twenty minutes of baking turns it into a bubbling, golden-topped casserole with a sauce that clings to every piece of pasta.

Ingredients

Why this recipe works

The method works because each component is cooked to its own best state before they meet the oven. Searing the chicken first builds browned fond in the skillet, and that same skillet later becomes the sauce pan, so those browned bits dissolve into the cream sauce and season it from within.

Boiling the pasta one minute short matters just as much: the noodle keeps a firm center and spends its last minute of cooking absorbing sauce in the baking dish instead of swelling into mush.

The sauce itself is built in layers rather than dumped in at once. Butter and broth form the base, cream cheese and sour cream bring body and tang, and the pepperoncini brine cuts through the richness the way the classic Mississippi recipe does.

Melting a full cup of cheddar into the sauce — not just on top — means the casserole is creamy throughout, while the mozzarella layer on top browns and stretches. Baking at a steady 400°F (200°C) heats the center through and browns the cheese at the same time, so there is no need to finish under the broiler.

Notes and substitutions

Choose chicken breasts of similar size so they finish at the same time; an instant-read thermometer takes the guesswork out of the 165°F (74°C) target. Boneless thighs are a fine swap and stay especially juicy. Shred the chicken by hand with two forks — chunky shreds keep their bite after baking, while finely shredded meat can almost disappear into the sauce.

Full-fat cream cheese and sour cream give the sauce its body; reduced-fat versions melt looser and can thin the casserole. Shred the cheddar and mozzarella from a block if time allows — anti-caking agents on pre-shredded cheese can make the top grainy.

A 9x13-inch glass baking dish is the right depth here; a smaller dish will bubble over, a larger one will spread the layers thin and dry the edges. Pepperoncini heat is mild, so the casserole stays family-friendly; adjust with the brine, which carries most of the tang.

• chicken breasts: Boneless skinless chicken thighs work the same way and stay extra juicy; cook them to 165°F (74°C) and shred.
• elbow pasta: Any short pasta holds the sauce well — rotini, penne or shells are all good swaps; keep the 12 oz weight.
• ranch seasoning: Mix 1/2 tsp each dried dill, dried parsley, garlic powder, onion powder and a pinch of salt for a homemade blend.
• pepperoncini: For a milder casserole, use chopped pickled jalapeños or diced pimientos and keep the brine for tang.

Equipment

• 9x13-inch glass baking dish
• large skillet
• large pot
• mixing bowl
• two forks for shredding
• spatula