Dump And Bake Chicken Parmesan Casserole: Your New Weeknight Hero!
This Dump And Bake Chicken Parmesan Casserole delivers classic Italian comfort with minimal effort and maximum flavor.
Simply combine cooked chicken, marinara, pasta, and cheeses in one dish and bake for just 30 minutes of hands-off cooking time.
It’s an ideal weeknight meal, perfect for busy evenings when you crave a hearty, cheesy dinner without the fuss, and pairs wonderfully with a simple green salad and garlic bread.
Dump And Bake Chicken Parmesan Casserole

This Dump And Bake Chicken Parmesan Casserole delivers classic Italian flavors with minimal effort and cleanup.
Ingredients
- 12 oz (340g) penne pasta, uncooked
- 2 cups (480g) cooked chicken, shredded or diced
- 24 oz (680g) marinara sauce, jarred
- 1 cup (240ml) water or chicken broth
- 2 cloves garlic, minced
- 1 tsp (5ml) Italian seasoning
- 1/2 tsp (2.5ml) salt
- 1/4 tsp (1.25ml) black pepper, freshly ground
- 2 cups (224g) shredded mozzarella cheese, divided
- 1/2 cup (50g) grated Parmesan cheese
- 2 tbsp (30ml) fresh parsley, chopped, for garnish (optional)
Instructions
- Preheat oven to 375°F (190°C). Lightly grease a 9×13 inch (23×33 cm) baking dish with cooking spray or butter.
- In a large mixing bowl, combine 12 oz (340g) uncooked penne pasta, 2 cups (480g) cooked chicken (shredded or diced), 24 oz (680g) marinara sauce, 1 cup (240ml) water or chicken broth, 2 cloves minced garlic, 1 tsp (5ml) Italian seasoning, 1/2 tsp (2.5ml) salt, and 1/4 tsp (1.25ml) black pepper. Stir 30-45 seconds until pasta is fully coated.
- Transfer mixture to the prepared 9×13 inch (23×33 cm) baking dish. Spread evenly, ensuring pasta is mostly submerged in liquid.
- Cover baking dish tightly with aluminum foil. Bake 30-35 minutes in the preheated oven, until liquid is mostly absorbed and pasta is nearly al dente.
- Remove casserole from oven. Discard foil. Sprinkle 2 cups (224g) shredded mozzarella cheese and 1/2 cup (50g) grated Parmesan cheese evenly over the hot pasta.
- Return uncovered casserole to oven. Bake 10-15 minutes, until cheese is melted, golden brown, and bubbling.
- Remove from oven. Rest 5-10 minutes to allow sauce to set.
- Garnish with 2 tbsp (30ml) fresh chopped parsley before serving.
- Add 1/2 cup (120g) ricotta cheese to the pasta mixture before baking for a creamier texture.
- Substitute 2 large (1.5 lb / 680g total) raw boneless, skinless chicken breasts or thighs, cut into 1-inch (2.5 cm) cubes. If using raw chicken, increase initial covered baking time to 40-45 minutes total to reach an internal temperature of 165°F (74°C).
- Add 1 cup (150g) baby spinach or 1/2 cup (75g) diced bell peppers to the pasta mixture.
- Stir in 1/4 tsp (1.25ml) red pepper flakes with seasonings in step 2 for added heat.
- Assemble casserole (steps 1-3) 24 hours in advance. Cover tightly and refrigerate. Before baking, remove from refrigerator 30 minutes. Proceed with step 4, adding 5-10 minutes to initial covered bake time if cold.
- Store leftovers in an airtight container in the refrigerator for 3-4 days. Reheat individual portions in microwave until hot. Reheat entire casserole (covered) in an oven at 350°F (175°C) for 20-30 minutes, until bubbling and hot.
Notes
How to Store, Reheat, and Prep Ahead
Refrigerator Storage
Duration: 5-7 days in airtight container
Allow your Dump And Bake Chicken Parmesan Casserole to cool completely at room temperature (no longer than two hours) before transferring it to storage. For best results, spoon individual portions or the entire remaining casserole into an airtight glass container. Glass containers prevent plastic staining and food odors, and allow for more even reheating. While the casserole is safe to eat for up to 7 days, the quality is best consumed within 3-4 days. Over time, the pasta may absorb more sauce and become softer, losing some of its initial bite. The sauce’s freshness can also diminish slightly, though the comforting flavors generally meld and deepen. Beyond day 5, the texture of the pasta and the vibrancy of the sauce will noticeably decline.
Freezer Storage
Duration: 2-3 months
Freezing this casserole is an excellent way to extend its life. For baked leftovers, portion the cooled casserole into freezer-safe containers or individual freezer bags, pressing out as much air as possible before sealing. For an unbaked casserole, assemble it in a freezer-to-oven safe dish, cover tightly with a layer of plastic wrap directly on the surface, then wrap with two layers of heavy-duty aluminum foil. Label with the date. When ready to enjoy, thaw frozen portions or the entire casserole overnight (8-12 hours) in the refrigerator. Baking directly from frozen is possible for an unbaked casserole, but will significantly increase the cooking time (often double). Expect some minor textural changes: the pasta may become slightly softer, and the sauce might thin a little upon thawing and reheating. The cheese topping could also become a bit drier or crumbly, but the overall flavor remains delicious.
Reheating Instructions
- Oven (Best Method):Preheat oven to 350°F. For individual servings, place in an oven-safe dish, cover with foil, and bake for 15-20 minutes. For a larger pan, cover tightly with foil and bake for 25-35 minutes. Remove foil for the last 5-10 minutes if you prefer a crisper top. The casserole is ready when it’s bubbling around the edges and heated through to an internal temperature of 165°F. This method ensures even heating and helps restore a pleasant texture to the cheese and pasta.
- Microwave (Acceptable, but may alter texture):Transfer a single serving to a microwave-safe dish. Cover loosely with a microwave-safe lid or damp paper towel to retain moisture. Heat on high for 2-4 minutes, stirring halfway through, or until hot throughout. Be aware that microwave reheating can sometimes lead to uneven heating, and the pasta may become softer or slightly rubbery, while the cheese might not melt as uniformly as in the oven.
Make-Ahead Tips
The “dump and bake” nature of this casserole already makes it a fantastic make-ahead meal. For even quicker assembly, you can prep several components up to 1-2 days in advance. Cook and shred your chicken breast, storing it in an airtight container in the refrigerator. You can also grate your Parmesan and mozzarella cheeses and store them separately in airtight bags in the fridge. If you choose to par-cook your pasta, cook it a minute or two less than al dente to ensure it doesn’t become mushy during the final bake; toss with a little olive oil to prevent sticking and store refrigerated. The entire casserole can be assembled (unbaked) up to 24 hours in advance. Cover it tightly with plastic wrap and refrigerate until you’re ready to bake. If baking from chilled, you may need to add 5-10 minutes to the original baking time.
Pro Tips for the Best Dump And Bake Chicken Parmesan Casserole
Ingredient Tips
- Pasta Pre-soak:Soak 16 oz penne or ziti in cold water for 30 minutes. This hydrates pasta, ensuring al dente results after 50-60 minutes baking and preventing mushiness.
- Chicken Thighs for Moisture:Use 1.5 lbs boneless, skinless chicken thighs, cut to 1-inch cubes. Thighs stay juicy, fork-tender through the 375°F (190°C) bake; breast meat dries faster.
- Thick Marinara Sauce:Select 24-28 oz premium, thick marinara. If thin, simmer for 10-15 minutes to reduce by 1/4 cup. This prevents a watery casserole.
- Freshly Grated Cheese Blend:Combine 1 cup freshly grated Parmesan with 2 cups block mozzarella (shred yourself). This melts smoothly, yielding a bubbling, golden brown crust in 20-25 minutes.
Technique Tips
- Precise Liquid Level:Ensure sauce just covers top pasta, no more than 1/4 inch visible. Add 1/4 cup broth if dry, remove 1/4 cup sauce if soupy.
- Initial Covered Bake:Bake, tightly covered with foil, at 375°F (190°C) for 30 minutes. This traps steam, cooking pasta to fork-tender and keeping chicken juicy.
- Uncover for Golden Melt:Remove foil, sprinkle 3 cups total cheese, bake uncovered 20-25 minutes at 375°F (190°C). Cheese should be bubbling at edges and lightly golden brown.
- Crispy Crumb Finish:Mix 1/2 cup panko, 2 tbsp melted butter, 1/4 cup grated Parmesan. Sprinkle over melted cheese for 5-10 minutes at 375°F (190°C) until deeply golden brown and crisp.
- Mandatory Resting Period:Rest casserole at least 15 minutes after baking. This lets pasta absorb liquid, cheese set, and flavors meld, ensuring clean servings that slide off the spoon.
Common Issues
- Mushy Pasta:If pasta is mushy, reduce initial covered bake to 25 minutes at 375°F (190°C). Ensure pasta is pre-soaked for 30 minutes and liquid is exactly to the pasta top.
- Dry Chicken:Use 1.5 lbs chicken thighs. Follow 30-minute covered bake at 375°F (190°C) to lock in moisture, uncovering only for the final 20-25 minutes.
- Casserole Too Watery:Use thick marinara. If thin, simmer for 10-15 minutes to reduce by 1/4 cup. Ensure sauce doesn’t exceed 1/4 inch above pasta to prevent soupy outcome.
- Pale/Non-Crispy Cheese:For golden, bubbling cheese, ensure 20-25 minutes uncovered bake at 375°F (190°C). If needed, raise oven to 400°F (200°C) for final 5-7 minutes on top rack.