Slow-Simmered Senegalese Chicken Yassa with Tangy Onion Sauce

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

A classic West African dish featuring marinated chicken thighs slow-cooked in a vibrant, lemony onion and mustard sauce with a subtle smoky depth. This african-inspired chicken ready in about 65 minutes blends bone-in chicken thighs, large, thinly sliced yellow onions, minced garlic cloves 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: 15 min Cook: 50 min Serves 4 African cuisine 380 cal/serving
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Ingredients

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Instructions

  1. Step 1: In a large bowl, combine 4 minced garlic cloves, 1/4 cup fresh lemon juice, 2 tbsp Dijon mustard, 2 tbsp white vinegar, 1 tsp dried thyme, 1 1/2 tsp salt, and 1 tsp black pepper. Add 8 bone-in chicken thighs and toss to coat thoroughly. Cover and marinate in the refrigerator for at least 2 hours, ideally overnight.
  2. Step 2: Heat 3 tbsp vegetable oil in a large heavy-bottomed skillet over medium-high heat. Remove the chicken from marinade, reserving marinade liquid, and sear chicken thighs skin-side down for 5-6 minutes until golden brown and crispy, then flip and cook 3-4 minutes more. Remove chicken and set aside.
  3. Step 3: In the same skillet, add 4 large thinly sliced yellow onions and sauté over medium heat for 10-12 minutes, stirring occasionally, until the onions are soft, translucent, and start to caramelize, coating the pan with their golden sweetness.
  4. Step 4: Pour in the reserved marinade and 1 cup chicken broth into the onions, stirring to deglaze the pan and incorporate all flavors. Add 2 bay leaves and 1 whole scotch bonnet pepper, if using, and return the chicken to the skillet, nestling it into the sauce.
  5. Step 5: Reduce heat to low, cover, and simmer gently for 30-35 minutes until the chicken is cooked through and tender, and the sauce has thickened slightly, coating the chicken beautifully.

Frequently asked questions

How long does Slow-Simmered Senegalese Chicken Yassa with Tangy Onion Sauce take to make?

Total time is about 65 minutes (15 min prep + 50 min cook). A small batch typically covers several meals in the week — store as the recipe directs.

How do I store leftover Slow-Simmered Senegalese Chicken Yassa with Tangy Onion 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 Slow-Simmered Senegalese Chicken Yassa with Tangy Onion 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 Slow-Simmered Senegalese Chicken Yassa with Tangy Onion 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 Slow-Simmered Senegalese Chicken Yassa with Tangy Onion Sauce?

African 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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