Rotisserie Chicken and Zucchini Casserole for Those Busy Weeknights

Some evenings, you just want something warm and satisfying without spending hours in the kitchen. This rotisserie chicken and zucchini casserole fits right into those moments. It’s cozy, cheesy, and filled with fresh zucchini, all coming together in a way that feels like a hug on a plate.

I remember the first time I made this after a long, hectic day. The smell of sautéed onions and garlic filled the kitchen while the zucchini softened just enough to keep a little bite. I was halfway through mixing everything when the phone rang, and I got distracted for a bit—so the cheese mix wasn’t perfectly even. But honestly, that little imperfection made it feel more like home cooking than anything else. When it came out of the oven with the breadcrumb topping golden and crackling, I almost didn’t want to share. It’s the kind of dish you don’t have to fuss over to feel like you’ve created something special.

  • Combines the ease of store-bought rotisserie chicken with fresh, tender zucchini for a quick, hearty meal.
  • Comforting cheesy layers balanced with a crispy breadcrumb topping — it’s simple, and that’s kind of the point.
  • Prepping takes about 15 minutes, so you can start dinner almost as soon as you get home.
  • Feeds a family or provides leftovers that reheat well, though those first bites straight from the oven are unbeatable.

Even if you’re not usually a casserole person, the straightforward flavors here might just win you over. No complicated steps or exotic ingredients—just a few pantry staples and a rotisserie chicken making magic happen.

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Close-up of rotisserie chicken and zucchini casserole with a golden crust and fresh herbs

Rotisserie Chicken and Zucchini Casserole


  • Total Time: 50 minutes
  • Yield: 6 1x

Description

A comforting and easy-to-make casserole featuring tender rotisserie chicken, fresh zucchini, creamy cheese, and a crispy breadcrumb topping. Perfect for a quick weeknight dinner.


Ingredients

Scale

3 cups rotisserie chicken, shredded
3 medium zucchinis, sliced into 1/4-inch rounds
1 medium yellow onion, diced
2 cloves garlic, minced
1 cup shredded mozzarella cheese
1/2 cup shredded cheddar cheese
1/2 cup grated Parmesan cheese
1 cup sour cream
1/2 cup mayonnaise
1/2 cup plain breadcrumbs
2 tablespoons olive oil
1 teaspoon dried Italian seasoning
1/2 teaspoon salt
1/4 teaspoon black pepper


Instructions

Preheat the oven to 375°F (190°C).
Heat olive oil in a large skillet over medium heat. Add diced onion and cook for 4-5 minutes until softened.
Add minced garlic to the skillet and cook for an additional 1 minute until fragrant.
Add sliced zucchini to the skillet, season with salt, pepper, and dried Italian seasoning. Cook for 5-7 minutes until zucchini is just tender. Remove from heat.
In a large mixing bowl, combine shredded rotisserie chicken, cooked zucchini mixture, sour cream, mayonnaise, mozzarella cheese, cheddar cheese, and half of the Parmesan cheese. Mix well.
Transfer the mixture into a greased 9×13-inch baking dish and spread evenly.
Sprinkle the remaining Parmesan cheese and breadcrumbs evenly over the top of the casserole.
Bake in the preheated oven for 30-35 minutes, or until the casserole is bubbly and the topping is golden brown.
Remove from the oven and let it cool for 5 minutes before serving.

  • Prep Time: 15 minutes
  • Cook Time: 35 minutes

Don’t worry if you don’t have a fancy baking dish; a simple casserole pan or even a sturdy oven-safe dish works great here. I usually serve this with a crisp green salad or some crusty bread to soak up the cheesy sauce. If you want to switch things up, you can toss in some mushrooms or swap out mozzarella for pepper jack if you’re feeling adventurous—though I haven’t tested all of these variations thoroughly. Sometimes I add a pinch of chili flakes to the zucchini as it sautés, just for a subtle kick.

FAQ

Can I make this ahead of time? Yes! Assemble the casserole and refrigerate for up to 24 hours before baking. Just add a few extra minutes to the bake time if it’s going in cold.

What if I don’t have a rotisserie chicken? Shredded cooked chicken from any source works well. Leftover roast chicken or even cooked turkey can be substituted.

Is this freezer friendly? Absolutely. Wrap it tightly and freeze for up to 2 months. Thaw overnight before baking.

Ready to make dinner easier and tastier? Scroll down, save this recipe, and get cooking—it’s just that simple.