Grilled Chicken Yassa with Tangy Lemon and Onion Sauce

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

A classic Senegalese dish featuring grilled chicken marinated in a bright lemon and mustard sauce, served with tender caramelized onions. This african-inspired chicken ready in about 45 minutes blends (about 2 lbs) bone-in chicken thighs, large, thinly sliced yellow onions, fresh lemon juice 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 450 calories and feeds 6, 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: 30 min Serves 6 African cuisine 450 cal/serving
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Ingredients

Instructions

  1. Step 1: In a large bowl, whisk together 1/2 cup fresh lemon juice, 3 tablespoons Dijon mustard, 4 minced garlic cloves, 1/4 cup vegetable oil, 2 teaspoons salt, 1 teaspoon black pepper, and 1 finely chopped scotch bonnet pepper (optional) to form the marinade.
  2. Step 2: Add 6 bone-in chicken thighs to the marinade, turning to coat evenly. Cover and refrigerate for at least 4 hours or overnight for best flavor.
  3. Step 3: Preheat grill to medium-high heat (about 400°F). Remove chicken from marinade, reserving the marinade and set aside.
  4. Step 4: Grill chicken thighs for 6-8 minutes per side until cooked through and nicely charred.
  5. Step 5: Meanwhile, heat a large skillet over medium heat. Add the reserved marinade and 3 large thinly sliced yellow onions, cooking and stirring frequently until onions are soft and caramelized, about 15 minutes.
  6. Step 6: Serve grilled chicken topped with the tangy caramelized onion sauce alongside 2 cups cooked white rice.

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Frequently asked questions

How long does Grilled Chicken Yassa with Tangy Lemon and Onion Sauce take to make?

Total time is about 45 minutes (15 min prep + 30 min cook). A small batch typically covers several meals in the week — store as the recipe directs.

How do I store leftover Grilled Chicken Yassa with Tangy Lemon and 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 Grilled Chicken Yassa with Tangy Lemon and 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 Grilled Chicken Yassa with Tangy Lemon and Onion Sauce 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.

What goes well with Grilled Chicken Yassa with Tangy Lemon and 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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