
Transform your leftover rotisserie chicken into a bubbling, cheesy Chicken Parmesan Casserole that tastes like it took hours but comes together in under 45 minutes. The ultimate easy baked chicken parmesan casserole with pasta the whole family will beg for.

There is a rotisserie chicken sitting in your fridge right now, and it deserves better than being picked at cold over the sink at midnight. This Leftover Rotisserie Chicken Parmesan Casserole is the recipe that turns those humble leftovers into something genuinely spectacular: a bubbling, cheesy, golden-topped baked chicken parmesan casserole with pasta that your family will absolutely lose their minds over.
This is weeknight cooking at its best. No pounding chicken breasts, no frying, no fuss. You get every ounce of that classic chicken parm flavor baked right into a cozy casserole dish with tender pasta, rich marinara, and a ridiculously satisfying breadcrumb crust. It is the kind of dinner that makes everyone ask for seconds.
Getting the texture right in a baked casserole chicken parmesan recipe comes down to two things: good quality marinara and freshly grated Parmesan. A thick, flavorful sauce holds everything together without making the pasta soggy, and real Parmesan melts into the dish in a way that pre-grated canned cheese simply cannot match.
Most people think of chicken parmesan as a restaurant dish, something with crispy breaded cutlets and a plate of spaghetti twirled at the table. And that version is wonderful. But the chicken parmesan casserole dish format solves a problem that the classic cannot: it feeds a crowd effortlessly and reheats like a dream.
By using shredded rotisserie chicken, you skip the prep entirely and go straight to the fun part. The chicken is already perfectly seasoned and juicy. When it gets folded into the sauce with pasta and two kinds of cheese, every bite delivers that full parmesan chicken casserole experience without the effort.
Chef's Tip: Cook your pasta one to two minutes less than the package directions. It will finish cooking inside the oven and absorb some of the marinara, which means the final texture is perfectly tender rather than mushy.
One of the most popular spins on this dish is the chicken finger parmesan casserole. Instead of folding shredded chicken into the pasta mixture, you layer cooked chicken tenders or breaded strips on top before adding the cheese and breadcrumbs. This gives you a bit of crispy texture contrast and leans into that chicken tenders parmesan casserole energy that kids especially go wild for.
Both versions are equally easy and equally delicious. The shredded rotisserie version is a bit more saucy and cohesive. The chicken tender version has more textural drama. You honestly cannot go wrong.
The breadcrumb topping is what separates a good chicken parmesan casserole dish from a great one. Mixing Italian breadcrumbs with melted butter before scattering them over the cheese creates a topping that bakes up deeply golden and almost cracker-crisp. It provides the contrast that makes every forkful so satisfying.
The combination of stretchy mozzarella underneath and that crunchy crown on top is exactly what makes this a baked chicken parmesan in casserole dish worth repeating every week.
Ready to turn those leftovers into the best dinner of the week? Here is everything you need:

Transform your leftover rotisserie chicken into a bubbling, cheesy Chicken Parmesan Casserole that tastes like it took hours but comes together in under 45 minutes. The ultimate easy baked chicken parmesan casserole with pasta the whole family will beg for.
Preheat your oven to 400 degrees F (200 degrees C). Lightly grease a 9x13-inch casserole dish with olive oil or nonstick spray.
Cook the penne pasta according to package directions until just al dente, about 1-2 minutes less than the package suggests. Drain well and set aside.
In a large mixing bowl, combine the shredded rotisserie chicken, cooked pasta, marinara sauce, minced garlic, Italian seasoning, red pepper flakes (if using), salt, and pepper. Stir until everything is evenly coated.
Fold in 1.5 cups of the shredded mozzarella and half the Parmesan. Stir gently to combine without breaking up the pasta too much.
Transfer the mixture into the prepared casserole dish and spread it into an even layer.
Scatter the remaining 0.5 cup of mozzarella and remaining Parmesan evenly over the top.
In a small bowl, stir together the Italian breadcrumbs and melted butter until the crumbs are evenly moistened. Sprinkle this mixture over the cheese layer.
Bake uncovered for 25 to 30 minutes, until the casserole is bubbling around the edges and the breadcrumb topping is deep golden brown.
Remove from the oven and let rest for 5 minutes before serving. Scatter fresh torn basil over the top and serve hot.
Serve this easy baked chicken parmesan casserole with pasta straight from the dish with a simple green salad and crusty garlic bread on the side. A glass of Chianti or sparkling water with lemon makes it feel genuinely special.
For variations, try stirring in a handful of baby spinach before baking, or adding sliced black olives and roasted red peppers for a more Mediterranean flavor profile. You can also swap the penne for gluten-free pasta with zero compromise on taste.
Leftovers reheat beautifully and actually taste better the next day once the flavors have had time to deepen together. This is the parmesan chicken casserole recipe you will find yourself making again and again, not just when you have leftover chicken, but as an excuse to buy a rotisserie chicken in the first place.