Imagine a classic Italian favorite that you can assemble in minutes, pop in the oven, and walk away while it turns golden and bubbling. That’s the magic of this Dump‑and‑Bake Chicken Parmesan Casserole—comfort food with zero fuss.
What sets this dish apart is the layered combination of tender chicken, a rich marinara‑parmesan sauce, and a crunchy breadcrumb topping, all baked together in one pan. The “dump‑and‑bake” method means no stovetop searing, yet you still get that irresistible crust.
This casserole is perfect for busy families, casual dinner parties, or anyone craving a hearty, cheesy meal without the hassle. Serve it for weeknight dinners, potlucks, or a relaxed weekend lunch.
Simply combine the ingredients, spread them evenly in a baking dish, and bake at 375°F until the cheese melts and the top turns beautifully crisp. In under an hour you’ll have a crowd‑pleasing centerpiece.
Why You'll Love This Recipe
One‑Pan Wonder: All the flavors meld together in a single baking dish, cutting cleanup to a minimum while still delivering that classic chicken‑parmesan taste.
Hands‑Free Cooking: Once the casserole is in the oven you can attend to other tasks, making it ideal for busy evenings when you need a delicious dinner fast.
Cheese‑Lover’s Dream: A generous blend of mozzarella and parmesan creates a gooey, golden crust that stretches with every forkful, satisfying any cheese craving.
Family‑Friendly Flavor: Mild spices and familiar Italian ingredients appeal to both kids and adults, ensuring everyone at the table leaves happy.
Ingredients
The success of this casserole hinges on a handful of high‑quality staples. Fresh chicken breasts provide a lean protein base, while the marinara sauce delivers bright tomato acidity. A blend of mozzarella and parmesan adds richness, and the breadcrumb topping supplies a satisfying crunch. Simple herbs and seasonings round out the flavor profile, creating a balanced, comforting dish.
Main Ingredients
- 4 boneless, skinless chicken breasts (cut into 1‑inch cubes)
- 24 oz marinara sauce (store‑bought or homemade)
- 1 ½ cups shredded mozzarella cheese
- ½ cup grated Parmesan cheese
Breadcrumb Topping
- ¾ cup Italian seasoned breadcrumbs
- 2 tablespoons melted butter (or olive oil)
Seasonings & Garnish
- 1 teaspoon dried oregano
- ½ teaspoon garlic powder
- Salt and freshly ground black pepper, to taste
- Fresh basil leaves, chopped (for garnish)
Together these ingredients create a harmonious casserole where juicy chicken absorbs the aromatic tomato sauce, the cheeses melt into a silky blanket, and the breadcrumb crust adds a golden crunch. The herbs provide a fragrant finish, while the simple seasoning ensures every bite is perfectly balanced.
Step-by-Step Instructions

Preparing the Ingredients
Begin by preheating your oven to 375°F (190°C). While the oven warms, dice the chicken breasts into uniform 1‑inch cubes; uniform pieces ensure even cooking. Toss the chicken with a pinch of salt, pepper, oregano, and garlic powder, then set aside. This brief seasoning step builds flavor from the inside out.
Assembling the Casserole
- Layer the sauce. Spread the marinara sauce evenly across the bottom of a 9‑x‑13‑inch baking dish. The sauce acts as a flavorful cushion that keeps the chicken moist during baking.
- Add the chicken. Distribute the seasoned chicken cubes over the sauce in a single layer. This arrangement allows the heat to reach each piece directly, preventing soggy spots.
- Distribute the cheeses. Sprinkle the shredded mozzarella followed by the grated Parmesan over the chicken. The cheeses will melt, creating a gooey interior and a slightly browned top.
- Prepare the topping. In a small bowl, combine the Italian breadcrumbs with melted butter (or olive oil) until the crumbs are lightly coated. This mixture will turn crisp and golden as it bakes.
- Finish the casserole. Evenly scatter the buttered breadcrumbs over the cheese layer. The butter helps the crumbs brown evenly, delivering that satisfying crunch.
Baking & Finishing
Place the dish in the preheated oven and bake for 30‑35 minutes, or until the cheese is melted, the breadcrumbs are deep golden, and the chicken reaches an internal temperature of 165°F. Remove the casserole, let it rest for 5 minutes, then garnish with fresh chopped basil for a burst of color and freshness. Serve hot.
Tips & Tricks
Perfecting the Recipe
Uniform Chicken Cubes: Cutting the chicken to the same size guarantees even cooking and prevents dry edges.
Don’t Skip the Rest: Allowing the casserole to rest before serving lets the juices redistribute, keeping every bite moist.
Butter the Breadcrumbs: This simple step ensures a uniformly crisp topping that doesn’t burn.
Use Fresh Parmesan: Freshly grated Parmesan melts better and adds a brighter, nuttier flavor than pre‑grated.
Flavor Enhancements
Stir a splash of red‑wine vinegar into the marinara before spreading for a subtle tang. Add a pinch of crushed red‑pepper flakes to the breadcrumb mixture for gentle heat. Finish with a drizzle of extra‑virgin olive oil right after baking for silkier richness.
Common Mistakes to Avoid
Avoid covering the casserole with foil; the breadcrumbs need direct heat to crisp. Also, don’t over‑mix the breadcrumb topping—over‑coating can make it soggy instead of crunchy.
Pro Tips
Use a Meat Thermometer: Checking for 165°F ensures safety without overcooking.
Pre‑Toast Breadcrumbs: Lightly toast them in a dry skillet for extra depth before mixing with butter.
Layer Cheese Strategically: Reserve a small portion of mozzarella for the final 5 minutes of baking to keep it melt‑y and pull‑away.
Season the Sauce: Add a pinch of sugar or a splash of balsamic to balance acidity if the marinara tastes too sharp.
Variations
Ingredient Swaps
Swap chicken for turkey cutlets or thinly sliced pork tenderloin for a different protein profile. Replace mozzarella with provolone or smoked gouda for a richer taste. Add sliced mushrooms, spinach, or roasted red peppers between the sauce and chicken for extra texture and nutrition.
Dietary Adjustments
Use gluten‑free breadcrumbs or crushed pork rinds for a grain‑free version. Substitute dairy‑free mozzarella and nutritional‑yeast Parmesan for a vegan take. For low‑carb, serve the casserole over cauliflower rice instead of pasta or bread.
Serving Suggestions
Pair with a simple arugula salad dressed in lemon vinaigrette to cut through the richness. Garlic‑buttered garlic bread or a side of buttery polenta makes the meal heartier. A glass of chilled Chianti or a crisp Sauvignon Blanc completes the Italian‑inspired experience.
Storage Info
Leftover Storage
Allow the casserole to cool to room temperature, then transfer portions to airtight containers. Refrigerate for up to 4 days. For longer keeping, freeze in freezer‑safe containers for up to 3 months; wrap tightly with plastic wrap before adding the lid to prevent freezer burn.
Reheating Instructions
Reheat in a preheated 350°F oven, covered with foil, for 15‑20 minutes until steaming hot. Remove foil for the last 5 minutes to restore the breadcrumb crunch. In a microwave, heat on medium power for 2‑3 minutes, adding a splash of broth to keep it moist.
Frequently Asked Questions
This Dump‑and‑Bake Chicken Parmesan Casserole delivers restaurant‑quality flavor with a fraction of the effort. By following the step‑by‑step guide, using quality ingredients, and applying the tips provided, you’ll achieve a perfectly cheesy, crunchy, and comforting dish every time. Feel free to experiment with the suggested swaps or add your own twist—cooking is an adventure. Serve it hot, enjoy the compliments, and relish the simple joy of a great homemade meal.