This dump and bake chicken parmesan casserole is the version built for reliability, not just speed.
A lower oven temp, one quick stir halfway through, and breadcrumbs coated in olive oil instead of butter — small details that make this chicken parmesan pasta bake come out perfectly even every single time.
Your family will love the lighter, crispier topping and the way the seasoned penne absorbs every bit of the sauce in this dump and bake chicken pasta,
and you’ll love that this easy dinner recipe is the kind of casserole recipe readers come back to the same week and ask to make again.
Why You’ll Love This Dump and Bake Chicken Parmesan Casserole
- 375°F lower-and-slower approach — Most dump and bake chicken parmesan casserole recipes run at 425°F. This one bakes at 375°F for a longer, gentler cook that gives the pasta more time to absorb the sauce evenly without the risk of the edges drying out. One of the more forgiving casserole recipes for anyone who tends to get pulled away mid-cook.
- Olive oil breadcrumb topping — lighter than butter — The breadcrumbs are coated in olive oil rather than butter before going on. The result is a crispier, lighter crust that browns evenly and stays that way longer. A small detail that makes this one of the better-textured dump and bake dinners in the category.
- Stir halfway through for even pasta texture — Midway through the covered bake, you pull the dish out and give everything a stir. This one step — which most dump and bake pasta casserole recipes skip — redistributes the liquid and ensures every piece of pasta cooks at the same rate. No firm pockets, no mushy spots.
- Seasoned breadcrumbs for built-in flavor — Using already-seasoned breadcrumbs rather than plain Panko adds a layer of herb flavor to the topping that you don’t have to measure or mix separately. It’s the shortcut that makes this one of the most efficient easy dinner recipes on this list.
- Reader-tested and reliably good — Five reader reviews, all positive. Second helpings, repeat requests, and one family who made it again the same week. The kind of dump and bake chicken recipe that earns its place without needing to be sold.
For the Dump and Bake Chicken Parmesan Casserole
- Penne Pasta – Uncooked and added straight to the dish. The tubular shape holds sauce inside each piece as it bakes — this is the pasta shape that makes dump and bake pasta casserole recipes work properly.
- Cooked Chicken – Diced and scattered over the pasta. Pre-cooked is the right call here given the lower oven temperature. Rotisserie chicken is the best option — it brings seasoning into the dish that plain cooked breast can’t match.
- Marinara Sauce – Two full cups — the flavor base. Choose a sauce with body and depth. At 375°F the pasta cooks more slowly and the sauce reduces less, so starting with a quality jar matters more than it does at higher temperatures.
- Water – One cup combined with the marinara gives the penne enough liquid to cook through. The pasta absorbs all of it during the covered bake — every noodle comes out saucy rather than dry.
- Garlic Powder + Italian Seasoning – Stirred into the pasta and sauce mixture before it goes in the oven. They season the whole dish from the inside out rather than just sitting on the surface.
- Mozzarella – One cup scattered over the casserole after the midpoint stir. The right amount for this size recipe — enough to cover and melt through without overwhelming the breadcrumb crust on top.
- Grated Parmesan – Added alongside the mozzarella. Sharp, salty, and the cheese that makes this taste like chicken parm rather than just a baked pasta dinner.
For the Topping
- Seasoned Breadcrumbs – Already herbed and salted from the packaging. Scattered over the cheese in the final 15-minute uncovered bake. The shortcut that removes one mixing step without sacrificing any flavor in the finished crust.
- Olive Oil – Mixed into the breadcrumbs before they go on. Lighter than butter, crispier result, cleaner flavor. The topping technique that makes this dump and bake chicken parmesan casserole stand apart.
The Best Dump and Bake Chicken Parmesan Casserole I'Ve Ever Made
This is the dump and bake chicken parmesan casserole stripped down to its most essential form. Pasta, cooked chicken, marinara, cheese, and an olive oil breadcrumb topping — everything into one dish, covered, and baked.
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Servings: 6
Notes
Ingredients
For the casserole:
- 2 cups uncooked penne pasta
- 2 cups cooked chicken breast, diced
- 2 cups marinara sauce
- 1 cup water
- 1 tsp garlic powder
- 1 tsp Italian seasoning
- ½ tsp salt
- ½ tsp black pepper
- 1 cup shredded mozzarella cheese
- ½ cup grated Parmesan cheese
- 1 cup seasoned breadcrumbs
- 1 tbsp olive oil
- Preheat your oven to 375°F.
- Add the uncooked penne, diced cooked chicken, marinara sauce, water, garlic powder, Italian seasoning, salt, and pepper directly to a baking dish. Stir everything together until evenly combined.
- Cover tightly with foil — make sure there are no gaps so the steam stays trapped and the pasta cooks through properly. Bake covered for 35 minutes.
- Remove the foil and give the whole mixture a good stir. This redistributes the liquid and gives you even pasta texture throughout. The pasta should still be slightly firm at this point — that's right.
- Sprinkle the mozzarella and Parmesan evenly over the top.
- In a small bowl, mix the seasoned breadcrumbs with the olive oil until every crumb is lightly coated. Scatter over the cheese layer.
- Return to the oven uncovered and bake for another 15 minutes until the cheese is bubbly and the breadcrumbs are lightly golden brown.
- Rest for 5 minutes before serving. This lets the casserole set so it scoops cleanly.
- Use a deeper baking dish: A deeper dish prevents any sauce from bubbling over during the longer covered bake. A standard 9x13 at least 2 inches deep works well — don't use a shallow dish for this recipe.
- The midpoint stir matters: This is the step that separates this dump and bake pasta casserole from the rest. Pulling the dish out at 35 minutes and stirring redistributes unabsorbed liquid and prevents uneven cooking. Don't skip it.
- Seasoned breadcrumbs: The recipe uses seasoned breadcrumbs which already contain herbs, garlic, and salt. If using plain breadcrumbs, add ½ tsp Italian seasoning and a pinch of garlic powder to the olive oil mixture before coating.
- Cooked chicken works best: This recipe is designed around pre-cooked chicken. Rotisserie, leftover baked, or quickly poached breast all work. The lower oven temperature means raw chicken would need significantly more time — reduce covered bake by 5–10 minutes if using raw and confirm 165°F before adding topping.
- Storage: Keeps in an airtight container in the fridge for up to 3 days. Freeze after baking and cooling for up to 1 month. Reheat covered in the oven at 350°F.
- Why bake at 375°F instead of 425°F like most recipes?The lower temperature gives the pasta more time to absorb the sauce evenly before the edges of the dish start to dry out. It’s a more forgiving approach for any dump and bake pasta casserole — if you get pulled away for a few minutes, the dish doesn’t suffer the way it would at higher heat. The midpoint stir compensates for the slower cook by redistributing liquid halfway through.
- Why stir halfway through — most recipes don’t do this?The stir at 35 minutes is what makes this one of the more reliable casserole recipes in the dump and bake dinners category. During the covered bake, liquid pools at the bottom and the pasta nearest the bottom absorbs more than the pasta on top. The stir redistributes everything so every piece of penne finishes cooking at the same rate. No mushy bottoms, no firm tops.
- Can I use raw chicken instead of cooked?You can, but you need to adjust. Raw chicken at 375°F in a covered casserole dish will take longer to reach 165°F than the recipe timing accounts for. Dice it small, confirm with a thermometer before adding the topping, and add extra covered bake time if needed. The recipe as written uses pre-cooked chicken because the lower temperature and the focus on even pasta cooking make pre-cooked the more reliable choice.
- Can I use plain Panko instead of seasoned breadcrumbs?Yes. Add ½ tsp Italian seasoning and a small pinch of garlic powder to the olive oil before coating the Panko. Panko will give a lighter, crispier crust than regular seasoned breadcrumbs — both work, but the texture will be slightly different. The olive oil coating step is the same either way.
- How do I prevent the casserole from drying out when reheating?Cover with foil before putting it back in the oven at 350°F. Add a small splash of water or marinara sauce to the portion before covering — this creates steam inside the foil that keeps the pasta from drying out as it reheats. The microwave works in a pinch for single portions but the pasta texture and breadcrumb crunch both suffer compared to oven reheating.
