Pan-Roasted Chicken Thighs with Caramelized Onions and Mustard Sauce

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

Juicy chicken thighs pan-roasted to golden perfection served with deeply caramelized onions and a tangy Dijon mustard pan sauce. This french-inspired chicken ready in about 50 minutes blends divided salt, divided black pepper, olive oil into a versatile sauce that lifts everything from grain bowls and roasted vegetables to grilled proteins — a small-batch staple worth keeping in the fridge. Each serving lands at about 380 calories and feeds 4, so a small batch covers several meals across the week without taking over the fridge. 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: 40 min Serves 4 French cuisine 380 cal/serving
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Ingredients

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Instructions

  1. Step 1: Pat dry 4 bone-in, skin-on chicken thighs and season both sides with 1/2 tsp salt and 1/4 tsp black pepper.
  2. Step 2: Heat 2 tbsp olive oil in a large skillet over medium-high heat until shimmering; place chicken thighs skin-side down and sear for 6-7 minutes until skin is golden brown and crisp.
  3. Step 3: Flip chicken, reduce heat to medium, cover skillet and cook for an additional 10 minutes until internal temperature reaches 165°F; remove chicken and set aside.
  4. Step 4: In the same skillet, reduce heat to medium-low, add 2 tbsp unsalted butter and 1 large thinly sliced yellow onion; cook, stirring occasionally, for 15 minutes until onions are golden and caramelized.
  5. Step 5: Stir in 2 minced garlic cloves and cook for 30 seconds until fragrant.
  6. Step 6: Add 2 tbsp Dijon mustard and 1/2 cup chicken broth, scraping browned bits from pan; simmer for 3 minutes until sauce thickens slightly.
  7. Step 7: Return chicken to the pan, spoon sauce over, sprinkle 1 tsp fresh thyme leaves, and serve warm.

Frequently asked questions

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

Total time is about 50 minutes (10 min prep + 40 min cook). A small batch typically covers several meals in the week — store as the recipe directs.

How do I store leftover Pan-Roasted Chicken Thighs with Caramelized Onions and Mustard Sauce?

Transfer to an airtight jar and refrigerate for up to 5–7 days. Most sauces freeze well for up to 2 months — portion into small containers or freezer bags so you can thaw only what you need. Stir before serving; cream- or yogurt-based sauces may separate on standing.

Can I substitute ingredients in Pan-Roasted Chicken Thighs 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 Thighs 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 Thighs 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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