Pan-Roasted Chicken with Caramelized Onions and Mustard Sauce

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

Tender pan-roasted chicken thighs served with sweet caramelized onions and a tangy mustard cream sauce. This French-inspired chicken recipe, ready in about 40 minutes, pairs bone-in chicken thighs, salt, black pepper for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 380 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: 10 min Cook: 30 min Serves 4 French cuisine 380 cal/serving
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Ingredients

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Instructions

  1. Step 1: Pat 4 bone-in chicken thighs dry and season with 1 tsp salt and 1/2 tsp black pepper evenly on both sides. Heat 2 tbsp olive oil in a large skillet over medium-high heat until shimmering.
  2. Step 2: Place chicken thighs skin-side down in the skillet and cook for 6-7 minutes without moving until skin is golden and crisp. Flip and cook another 5 minutes until cooked through. Remove chicken and set aside.
  3. Step 3: Reduce heat to medium, add 1 large thinly sliced yellow onion to the same skillet and sauté for 10 minutes, stirring occasionally, until onions are deeply caramelized and soft.
  4. Step 4: Add 3 minced garlic cloves and cook for 30 seconds until fragrant. Stir in 2 tbsp Dijon mustard and 1/2 cup chicken broth, scraping the browned bits from the pan to deglaze.
  5. Step 5: Pour in 1/2 cup heavy cream and 1 tsp chopped fresh thyme. Simmer sauce over low heat for 3-4 minutes until thickened and coats the back of a spoon.
  6. Step 6: Return chicken thighs to the skillet and spoon sauce over them. Cook for 2 minutes to reheat chicken and meld flavors, then serve immediately.

Frequently asked questions

How long does Pan-Roasted Chicken with Caramelized Onions and Mustard Sauce take to make?

Total time is about 40 minutes (10 min prep + 30 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 Pan-Roasted Chicken with Caramelized Onions and Mustard Sauce?

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 Pan-Roasted Chicken with Caramelized Onions and Mustard Sauce?

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 Pan-Roasted Chicken with Caramelized Onions and Mustard Sauce 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 Pan-Roasted Chicken with Caramelized Onions and Mustard Sauce?

French chicken 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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