SenegaleseMedium · Hot
Yassa Chicken Thighs with Mustard and Slow-Cooked Onion
Tender chicken thighs nestled in a mountain of deeply caramelized onions bathed in bright lemon-mustard sauce, served over fluffy white rice. This is the dish Awa's grandmother made on Sundays — slow-cooked, generous, and meant to be shared from one bowl.
Prep
45 min
Cook
1h 50m
Rest
10 min
Total
2h
Method
Marinate the Chicken
1
Add the chicken thighs to the marinade, turning to coat each piece thoroughly. Cover and let rest at room temperature for at least 30 minutes, or refrigerate overnight for deeper flavor.
Build the Slow-Cooked Onion Base
2
Adjust flame to maintain a gentle sizzle, stirring every few minutes, for 45 to 60 minutes until they are deeply golden, soft, and caramelized. The onions should whisper and slowly turn golden.
Sear and Braise the Chicken
3
Use a food thermometer to verify chicken thighs reach an internal temperature of 165°F (74°C) before serving.
Cook Rice and Serve
4
Bring the whole tray to the table and let everyone help themselves. A final hard squeeze of lemon over the top is not optional — it is the signature finish.
A
Nutri-Score
Excellent balance
A–E · lower is better · score -4
Calories
1042
per serving
High in protein · 75gLow sugar · 15gLow saturated fat · 8g
Protein
75g
Carbs
98g
Fat
38g
Sat. fat
8g
Fiber
7g
Sugar
15g
Sodium
1117mg
Gluten FreeDairy FreeHeart HealthyLow Sodium OptionDiabetes FriendlyHigh ProteinBalanced Meal
Nutri-Score is a general nutritional-balance guide, not medical or dietary advice.
E
Environmental impact
Very high impact
A–E · lower is better · includes estimates
kg CO2e
3.1
per serving
ECarbonBEU all-round· carbon sets the grade
Water
3.1m³
Land
102Pt
Runoff
0.3g P
chicken-thigh drives 81% of this recipe’s estimated footprint.
Carbon from Poore & Nemecek 2018; water, land & runoff from Agribalyse — modelled averages for comparing recipes, not a measurement of your groceries.
Flavor Profile
7
Umami
5
Sweet
4
Salty
6
Sour
1
Bitter
4
Spicy
Textures
TenderSilkySoftCrispyFluffy
Aromas
CaramelizedCitrusPungentWarm Spice
Kitchen Equipment
Primary Tool
Dutch OvenDutch OvenWooden SpoonStock PotChef KnifeCutting BoardMixing BowlTongsPlastic WrapKitchen TimerMeasuring Spoons
Counter FootprintMedium
Safety & Storage
Cooking Temperature
Cook chicken thighs to an internal temperature of 165°F (74°C) using a food thermometer. The onions are caramelized low and slow (45-60 minutes), but the final sear and braise must ensure proper doneness of the chicken.
Cross Contamination
Use separate cutting boards and utensils for raw chicken and other ingredients. Wash all surfaces, hands, and tools thoroughly with hot soapy water after handling raw poultry.
High Risk Population
For vulnerable populations (young children, elderly, pregnant individuals, immunocompromised), ensure chicken is cooked to 165°F (74°C) and never served rare or underdone. Avoid serving the dish with raw marinated chicken.
Handling
When marinating chicken at room temperature, limit exposure to no more than 2 hours total (including prep time). If marinating longer than 2 hours, keep refrigerated at 40°F (4°C) or below. The recipe specifies at least 30 minutes at room temperature, which is within safe limits, but monitor closely in warm environments.
Storage
Refrigerate leftover Yassa Chicken within 2 hours of cooking. Store in airtight containers at 40°F (4°C) or below. Consume within 3-4 days. Reheat leftovers to 165°F (74°C) before serving.
Allergen Warning
This dish contains mustard. Mustard is a regulated allergen in many countries (EU, UK, Canada, and others). Alert guests with mustard allergies or sensitivities. Mustard is present throughout the dish as it coats the chicken in marinade and forms part of the sauce.
Shelf Life
Prepared Yassa Chicken maintains optimal quality for 3-4 days refrigerated. The lemon-mustard sauce contains acidic ingredients that support food safety but do not preserve indefinitely. Do not freeze the finished dish as texture of caramelized onions degrades significantly.
Pro Tips
Technique
Do not rush the onions — 45 to 60 minutes of low heat transforms them into something sweet and deeply savory. If you hear them sizzle loudly, your fire is too high. They should whisper and slowly turn golden, like they are dreaming of becoming yassa.
Substitution
If you cannot find chicken thighs, drumsticks work beautifully and stay juicy. For a lighter version, you can use bone-in chicken breast, but reduce the braising time by 10 minutes so it does not dry out.
Flavor Boost
The final hard squeeze of lemon over the bowl is not decoration — it is the signature. Do not skip it. The brightness cuts through the richness of the onions and brings everything alive on the plate.
From the chef
Yassa lives and dies by the onion. You cook a mountain of yellow onion low and slow for the better part of an hour until it turns sweet and golden and gives up every bit of sharpness it had. Then you hit it with lemon and a spoonful of mustard, nestle in the chicken thighs, and let everything braise together until the sauce is glossy and clinging and smells like Sunday. A squeeze of lemon at the very end is not optional — it is the signature, the punctuation, the reason everyone leans in.
TagsSlow CookedOne PotCommunalCaramelized OnionsLemonMustardWeeknight DinnerGluten FreeWeekend Cooking
AllergensMustard
Source: generated · June 10, 2026