Slow-Cooked Chicken and Mushroom Casserole

By AislePrompt Test Kitchen · Reviewed by AislePrompt Editorial · ·

Tender chicken thighs and earthy mushrooms simmered in a creamy white wine sauce, baked until golden and bubbly. This american-inspired one pot ready in about 65 minutes pairs bone-in chicken thighs, cremini mushrooms, all-purpose flour for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 420 calories and feeds 4, 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: 15 min Cook: 50 min Serves 4 American cuisine 420 cal/serving
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Ingredients

Instructions

  1. Step 1: Pat 1 lb bone-in chicken thighs dry with paper towels, then season with salt and pepper.
  2. Step 2: Heat 1 tbsp butter in a large ovenproof skillet over medium-high heat, sear chicken thighs until golden brown on both sides, then remove and set aside.
  3. Step 3: Add 8 oz sliced cremini mushrooms to the skillet, cook for 5 minutes until softened, then sprinkle 2 tbsp all-purpose flour over mushrooms and stir for 1 minute.
  4. Step 4: Gradually whisk in 1 1/2 cups chicken broth and 1/2 cup heavy cream, bringing to a simmer while scraping up browned bits, then stir in 2 tsp fresh thyme and simmer for 3 minutes until slightly thickened.
  5. Step 5: Return chicken thighs to the skillet, nestling them into the sauce, cover with a lid, and bake at 375°F for 35 minutes until chicken reaches 165°F.

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Frequently asked questions

How long does Slow-Cooked Chicken and Mushroom Casserole take to make?

Total time is about 65 minutes (15 min prep + 50 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 Slow-Cooked Chicken and Mushroom 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 bone-in chicken thighs from drying out.

Can I substitute ingredients in Slow-Cooked Chicken and Mushroom 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 Slow-Cooked Chicken and Mushroom Casserole for a different number of people?

The recipe is written for 4 servings. Multiply each ingredient by (your serving target / 4). 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.

What goes well with Slow-Cooked Chicken and Mushroom Casserole?

American one pot like this pair well with a simple grain (rice, couscous, or crusty bread), a quick salad with acid (lemon vinaigrette, pickled onions), and a pan sauce or yogurt-based dip. Tap "Plan a meal with the AI" to get specific side suggestions.

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