Chicken and Spinach Casserole

By , Test Kitchen Director · Reviewed by AislePrompt Editorial · ·

A comforting baked dish with tender chicken, creamy spinach, and a gooey cheese topping. This american-inspired chicken (vegetarian-friendly) ready in about 70 minutes pairs chicken thighs, spinach, cream of mushroom soup for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 380 calories and feeds 6, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Prep: 30 min Cook: 40 min Serves 6 American cuisine 380 cal/serving
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Ingredients

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Instructions

  1. Step 1: Preheat oven to 350°F. In a large skillet, heat olive oil over medium heat. Cook chicken thighs for 5-7 minutes per side until golden, then set aside.
  2. Step 2: In the same skillet, sauté spinach for 3-4 minutes until wilted. Add cream of mushroom soup, dill, salt, and pepper, stirring until thickened.
  3. Step 3: Layer cooked chicken and spinach mixture in a 9x13-inch baking dish. Top with shredded Parmesan.
  4. Step 4: Bake for 25-30 minutes until bubbly and golden. Let rest for 5 minutes before serving.

Frequently asked questions

How long does Chicken and Spinach Casserole take to make?

Total time is about 70 minutes (30 min prep + 40 min cook). Most home cooks find this fits comfortably into a weeknight; double the batch on Sunday for two dinners.

How do I store leftover Chicken and Spinach Casserole?

Cool to room temperature within 2 hours, then store in an airtight container in the fridge for up to 4 days. Reheat covered in a 350°F oven for 10-12 minutes, or microwave at 70% power in 60-second bursts to keep chicken thighs from drying out.

Can I substitute ingredients in Chicken and Spinach Casserole?

Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.

How do I scale Chicken and Spinach Casserole for a different number of people?

The recipe is written for 6 servings. Multiply each ingredient by (your serving target / 6). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.

Is Chicken and Spinach Casserole vegetarian-friendly?

Yes — this recipe is tagged vegetarian-friendly based on its ingredient list. Always cross-check labels for packaged ingredients (sauces, broths, condiments) since formulations vary by brand.

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