This chicken parmesan casserole is the easy dinner recipe that proves less really is more.
Cooked chicken, marinara, two cheeses, and a golden breadcrumb topping go into one 8×8 dish — no pasta to boil, no extra pans, no complicated steps.
Your family will love this baked chicken parmesan casserole straight out of the oven, and you’ll love that the whole thing takes fifteen minutes to put together and gives you one dish to wash.
It even freezes beautifully — assemble, freeze, thaw, bake — making it one of those chicken casserole recipes that solves dinner on the hard nights too.
Why You’ll Love This Dump and Bake Chicken Parmigiana
- Only 6 ingredients — and you probably have them all — Cooked chicken, marinara sauce, mozzarella, Parmesan, breadcrumbs, and olive oil. That’s it. Of all the casserole recipes in the dump and bake dinners category, this is the one that wins on sheer simplicity. No pasta to measure, no water to add, no covered-then-uncovered timing to track.
- The most popular casserole recipe on Thriving Home — Hundreds of reader comments. Tested and retested in October 2025, updated to 375°F for 25–35 minutes and a broiler finish. When a recipe gets this kind of sustained engagement over years, it earns its place on the list.
- A genuine freezer meal — Assemble with cooked chicken, don’t bake, and freeze. Thaw and bake when ready. One of the few dump and bake chicken recipes that has been specifically developed and tested as a freezer meal — not just adapted as an afterthought. Make a double batch when you have the time and energy and you’ve just solved a future weeknight before it even becomes a problem.
- The broiler finish makes the topping — Two minutes under the broiler after the main bake is what takes the breadcrumb topping from golden to properly toasted. Watch it closely — but don’t skip it.
- Serve it the way you want — Over pasta, over rice, or straight from the dish. This casserole recipe is designed to be a flexible component of dinner rather than a rigid all-in-one bake. One of the most adaptable lazy dinners in this set.
For The Easiest Dump and Bake Chicken Parmigiana
- Fully-Cooked Chicken – Shredded or cubed and layered in the bottom of the dish. This is the recipe that makes the most of leftover rotisserie chicken — the seasoning it carries into the dish adds depth that plain poached breast can’t match. Use about 2–3 cups.
- Marinara Sauce – Poured over the chicken and mixed through. One full 24 oz jar is the right amount for this size casserole — enough sauce to keep the chicken moist throughout the 25–35 minute bake.
- Shredded Mozzarella – One cup scattered over the chicken and sauce. The melty, stretchy layer that makes this taste like chicken parm rather than just a sauced chicken casserole.
- Grated Parmesan – Half a cup added with the mozzarella. Sharp and salty — it’s the cheese that gives this six-ingredient dump and bake chicken parmesan recipe its Italian character.
- Breadcrumbs – The base of the topping. Mixed with olive oil, parsley, salt and pepper before going on. Goes on over the cheese so it sits on a stable surface and browns evenly rather than sinking into the sauce.
- Olive Oil – Mixed into the breadcrumbs before the topping goes on. Coats every crumb for an even golden toast during the bake and broil.
- Fresh Parsley – Stirred into the breadcrumb mixture. Adds a fresh, herby note to the topping that cuts through the richness of the cheese and marinara sauce.
The Easiest Dump and Bake Chicken Parmigiana
Fully cooked chicken, marinara, two cheeses, and an olive oil breadcrumb topping. No pasta in the dish itself. Serve it over whatever noodle or rice you have, and dinner is done. One of the cleanest, most honest dump and bake dinners in the category.
Print
Pin
Servings: 5
Notes
Ingredients
- 1 lb fully-cooked chicken breast, shredded or cubed (about 2–3 cups)
- 1 (24 oz) jar marinara sauce
- 1 cup shredded mozzarella cheese
- ½ cup grated Parmesan cheese
- ½ cup breadcrumbs
- 1 tbsp olive oil
- 2 tbsp fresh parsley, chopped
- Salt and pepper, to taste
- Preheat your oven to 375°F. Grease an 8x8-inch baking dish with cooking spray.
- Layer the fully-cooked shredded or cubed chicken evenly in the bottom of the dish.
- Pour the marinara sauce over the chicken and mix together until the chicken is coated. Spread the mixture evenly across the bottom.
- Sprinkle both cheeses evenly over the top until the chicken is fully covered.
- In a small bowl, stir together the breadcrumbs, olive oil, chopped parsley, and a pinch of salt and pepper. Sprinkle the breadcrumb mixture evenly over the cheese layer.
- Bake on the middle rack for 25–35 minutes until hot in the middle and bubbling on the sides.
- Turn on the broiler and broil for 1–2 minutes until the breadcrumbs are properly toasted and golden. Watch closely — it can go from golden to burnt quickly.
- Let rest for 10 minutes to allow the casserole to set before serving. Serve over cooked pasta or rice if desired.
- Fully cooked chicken only: This recipe is specifically designed for pre-cooked chicken — shredded, cubed, or leftover. Rotisserie chicken is the ideal shortcut. If you use a store-bought rotisserie bird, this will be slightly higher in calories and fat than the nutrition figures below, which are based on plain cooked chicken breast.
- Broiler is non-negotiable: The 1–2 minutes under the broiler is what finishes the topping. Without it, the breadcrumbs stay pale and soft. Set a timer and don't walk away.
- Freezer instructions: Assemble through Step 5. Do NOT bake. Cover tightly with plastic wrap and foil, label, and freeze. When ready to cook, thaw completely in the fridge overnight, then bake at 375°F as directed, adding extra time if still cold.
- Adding pasta to the dish: Several readers add a layer of al dente cooked pasta to the bottom of the dish before the chicken. If you do this, make sure the pasta is well coated in marinara so it doesn't dry out during baking.
- 8x8 dish vs 9x13: This recipe is sized for an 8x8. Doubling it for a 9x13 to make a second batch for the freezer is the smartest use of your time with this recipe.
- Why use fully cooked chicken instead of raw?This recipe was built around pre-cooked chicken from the start — it’s not a shortcut, it’s the design. The lower oven temperature (375°F) and shorter bake time work perfectly for heating cooked chicken through and melting the cheese, but aren’t calibrated for cooking raw chicken safely in the same window. Use cooked chicken breast, rotisserie, or any leftover cooked chicken you have on hand.
- Can I freeze this before baking?Yes — and this is one of the few casserole recipes in the dump and bake dinners category that has been specifically tested as a freezer meal. Assemble through Step 5, do not bake, cover tightly with plastic wrap then foil, and freeze. Thaw completely in the fridge before baking. It might need a few extra minutes in the oven if still cold in the centre.
- Do I have to serve it over pasta or rice?No — it’s delicious straight from the dish. Serving it over pasta, rice, or even crusty bread is a great way to stretch it further, especially if you’re feeding a larger crowd, but the casserole is completely self-contained as a main dish.
- Why does the recipe use an 8×8 instead of a 9×13?The recipe was designed as a smaller-format casserole that feeds 5 comfortably in an 8×8. The smaller dish means a thicker, more substantial layer of chicken and sauce per serving. Double the recipe and use a 9×13 for two batches — one for tonight, one for the freezer.
- The broiler step — is it really necessary?Yes. The 25–35 minute bake warms everything through and melts the cheese, but the breadcrumb topping needs those 1–2 minutes under the broiler to actually toast and brown. Without the broiler, it stays pale and soft — good, but not as good as it should be. Watch it closely because it moves from golden to burnt in under a minute once it gets going.
