This old-fashioned chicken casserole is a rich, cheesy baked dish made with a from-scratch sauce, and finished with a crispy, toasted breadcrumb topping. Prepared on the stovetop and then baked in a cast iron skillet, it delivers deep, comforting flavor — perfect for a cozy weeknight dinner or a hearty weekend meal.

Cast iron skillet filled with a pale baked mixture topped with browned breadcrumbs, with a wooden spoon scooping from the skillet.

A cheesy, indulgent chicken casserole

This casserole was served as a Saturday night special at a small country diner where I worked as a young woman. It was the kind of cheesy, indulgent chicken casserole people came in specifically to order — and more often than not, we ran out before the night was over.

If you gravitate toward simple, classic chicken dinners like cajun crusted chicken and vegetables, sticky oven baked bbq chicken, or spicy stovetop grilled chicken, this dish will feel right at home in your kitchen.

It’s rich creaminess relies on easy cooking methods, that let the simple flavors speak for themselves. I like to serve it with cheesy basil zucchini and tomatoes or a spoonful of tart caramel applesauce.

Recipe ingredients

All ingredients for this recipe are shown in the pic below and special notes are made in this bulleted list to assist you.

Bowls of cooked diced chicken, breadcrumbs, cream cheese, cottage cheese, sour cream, broth, flour, seasonings, and garlic arranged on a wooden surface.

Chicken breast: This recipe uses fully cooked chicken breast, so the moisture level is controlled during baking, helping the casserole stay rich and tender, rather than watery. For best results, cook the chicken gently and evenly — see my guide on how to properly cook chicken on the stove before assembling the casserole.
Cream cheese: Use full-fat cream cheese for structure and richness; it melts smoothly into the sauce and helps create that classic, indulgent casserole texture without greasiness.
Cottage cheese: Cottage cheese adds body and mild richness to the sauce without making it heavy. Small-curd cottage cheese blends more evenly into the mixture, keeping the texture consistent throughout the casserole.
Sour cream: Sour cream adds tang, and balances the richness of the cheeses. Full-fat sour cream holds up best in baked casseroles, and prevents the sauce from thinning as it heats.
Panko bread crumbs: Panko is mixed with traditional bread crumbs, to create a topping that toasts evenly without becoming dense. It’s larger flakes add a light crunch, while still allowing the topping to brown uniformly.
Bread crumbs: Fine bread crumbs are blended with panko, to fill in the gaps between the larger flakes, helping the topping stay cohesive and evenly browned across the entire casserole, rather than patchy or overly coarse.

See the recipe card for full information on ingredients and quantities.

How to make an old-fashioned chicken casserole

Stainless steel saucepan on a stovetop containing a thin, pale liquid with visible streaks along the bottom.

Saucepan on a stovetop filled with a pale, smooth liquid mixture.

Step 1: Add 1 tablespoon of the melted butter to a large saucepan set over medium heat. Whisk in the flour until completely smooth and glossy, making sure no dry flour remains before continuing.

Step 2: Gradually whisk in the broth, then add the pressed garlic and onion powder. Bring the mixture to a controlled, gentle simmer, whisking frequently, until it thickens slightly and coats the back of a spoon.

Saucepan on a stovetop filled with a thick, pale mixture with small lumps visible on the surface.

Saucepan on a stovetop filled with a thick, pale mixture showing a bumpy, uneven surface texture.

Step 3: Add the cream cheese and continue simmering, stirring regularly. The sauce should become mostly smooth and cohesive; a few small soft pieces are fine and will finish melting during baking.

Step 4: Stir in the cottage cheese and sour cream until evenly combined, then remove the saucepan from the heat. The sauce should be thick, rich, and well blended without separating.

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Saucepan on a stovetop filled with a thick, pale mixture containing visible chunks throughout.

Bowl filled with a mixed breadcrumb topping on a wooden surface.

Step 5: Fold the cooked chicken into the sauce, stirring until all of the pieces are evenly coated and distributed throughout.

Step 6: In a separate bowl, combine the panko bread crumbs and regular bread crumbs. Add the remaining melted butter and mix until the crumbs are evenly moistened, but still loose and crumbly.

Cast iron skillet filled edge to edge with an even layer of breadcrumb topping on a stovetop.

Cast iron skillet filled with browned breadcrumb topping, with small areas of pale sauce visible around the edges.

Step 7: Pour the chicken mixture into a cast iron skillet, and spread it into an even layer. Scatter the breadcrumb mixture evenly over the top, covering the surface without pressing it down so it stays light and crisp as it bakes.

Step 8: Bake at 350°F (175°C) for about 30 minutes, until the casserole is fully heated through and the topping is evenly golden brown. Let the casserole rest for a few minutes before serving to allow the sauce to settle.

Top tips

Keep the sauce at a gentle simmer, not a boil: When working with multiple dairy components, steady heat matters. A low, controlled simmer helps the sauce come together smoothly, without thinning out, before it goes into the oven.
Trust the baking process to finish the sauce: The sauce may seem slightly loose when removed from the stove, but it tightens as it bakes. This prevents the casserole from becoming overly thick or heavy once it’s fully cooked.
Use a 10-inch cast iron skillet for best results: A 10-inch skillet allows the chicken mixture to spread into an even layer, which promotes consistent heating and prevents the casserole from drying out around the edges before the center is hot.
Bake until the topping is evenly golden, not deeply browned: The breadcrumb topping should be lightly crisp and uniformly toasted. If it darkens too quickly, the casserole may not have had enough time to heat through properly.
Let the casserole rest briefly before serving: A short rest after baking gives the sauce time to settle, helping it hold together when served, rather than spreading across the plate.
Balance the richness with thoughtful sides: Because this is a rich, cheesy casserole, lighter or slightly acidic sides work especially well. Simple vegetables or tangy accompaniments help round out the meal, without competing with the main dish.