This dish was born from a simple truth: a Rotisserie Chicken & Zucchini Casserole from the grocery store is one of the best shortcuts in modern cooking. Shred it, layer it with tender zucchini, a creamy herbed sauce, and a golden, cheesy topping — and you have a casserole that tastes like it took all afternoon.
The zucchini keeps things light while soaking up every drop of that savory sauce, making each bite a perfect balance of richness and freshness. Whether it’s a busy Tuesday night or a relaxed weekend gathering, this casserole is always the answer.
Table of Contents
Why Do We Love This Recipe
⚡ Fast & fuss-free: No roasting, no long marinating. The rotisserie chicken does the heavy lifting before you even start.
🥦 Sneaky vegetables: Zucchini melts right into the creamy base — even picky eaters won’t notice they’re eating their greens.
🧀 Crowd-pleaser: A bubbling, golden cheese crust is the universal language of comfort. Everyone comes back for seconds.
🔄 Flexible: Swap in mushrooms, corn, or spinach. Use cheddar, gruyère, or mozzarella. The template is forgiving.
Ingredients Notes
- Rotisserie Chicken — Grab a whole bird from the deli section. Use both white and dark meat for the best balance of flavour and richness.
- Zucchini — Three medium zucchinis, thinly sliced. Pat them completely dry before layering — skipping this leads to a watery casserole.
- Yellow Onion — One medium onion, diced fine. Sautéeing it first takes the sharp edge off and adds a gentle sweetness to the sauce.
- Garlic — Three cloves, freshly minced. Fresh makes a noticeable difference here, but jarred works in a pinch.
- Sour Cream — Full-fat only. It gives the sauce a creamy, tangy richness that holds up through baking without breaking.
- Condensed Cream of Chicken Soup — One standard can. The shortcut that makes this whole dish come together so easily. Cream of mushroom works as a swap for a more earthy flavour.
- Chicken Broth — Half a cup to loosen the sauce just enough. Go low-sodium since the other ingredients already bring plenty of salt.
- Seasonings — Garlic powder, dried thyme, and smoked paprika. The smoked paprika adds subtle warmth and a beautiful colour to the finished dish.
- Shredded Cheese — Gruyère, sharp cheddar, or a mix of both. Freshly grated cheese melts far more smoothly than pre-shredded cheese from bags.
- Panko Breadcrumbs — Larger flakes stay crunchier than regular breadcrumbs. Tossed in melted butter, they create an irresistible golden crust.
How To Make It
Step 1. Preheat & prep: Heat your oven to 375 °F (190 °C). Grease a 9×13-inch baking dish. Pat the zucchini slices dry with paper towels — this step is non-negotiable if you want a creamy, not soupy, casserole. Sauté the onion and garlic in a little olive oil for 3–4 minutes until softened.
Step 2: Make the sauce. In a large bowl, whisk together the sour cream, condensed soup, chicken broth, and all the seasonings until smooth. Fold in the sautéed onion and garlic. Taste and adjust the seasoning — the sauce should be well-seasoned, as it will mellow as it bakes.
Step 3: Layer & assemble. Spread half the zucchini in an even layer in your prepared dish. Top with all of the shredded chicken, then pour over half the sauce. Add the remaining zucchini, pour the rest of the sauce over the top, and scatter the cheese evenly across the surface. Toss the panko with melted butter and sprinkle it over the cheese layer.
Step 4: Bake to golden glory. Bake uncovered for 30–35 minutes, until the top is deeply golden, the edges are bubbling, and a knife inserted in the center meets no resistance from the zucchini. Rest for 10 minutes before serving — this helps the casserole set so it slices cleanly and holds together on the plate.
Storage Leftovers
Refrigerator 4 days: Cover tightly with foil or transfer to an airtight container. Reheat at 350 °F for 15 min.
Freezer 3 months: Freeze before baking for the best texture. Thaw overnight in the fridge, then bake as directed.
Reheat 2–3 min: Microwave individual portions covered. Add a splash of broth to restore creaminess.
Rotisserie Chicken & Zucchini Casserole
Ingredients
- 3 cups Shredded rotisserie chicken White and dark meat combined
- 3 medium Zucchini Thinly sliced patted dry
- 1 medium Yellow onion Finely diced
- 3 cloves Garlic Freshly minced
- 1 cup Sour cream Full-fatFull-fat
- 1 can Condensed cream of chicken soup Standard 10.5 oz can
- ½ cup Chicken broth Low-sodium
- 1 tsp Garlic powder
- 1 tsp Dried thyme
- 1 tsp Smoked paprika
- 1½ cups Shredded gruyère or sharp cheddar Freshly grated preferred
- ½ cup Panko breadcrumbs
- 2 tbsp Butter Melted
- Salt and pepper Melted
Notes
- Pat zucchini dry thoroughly — this is the key step to avoiding a watery casserole.
- Swap cream of chicken soup for cream of mushroom for a more earthy flavour.
- Broil the last 2 minutes for an extra-crispy panko crust.
- Leftovers keep in the fridge for up to 4 days or freeze for up to 3 months.
Leave a Reply