Senegalese Fish Yassa with Caramelized Onions and Lemon
A traditional Senegalese dish featuring flaky white fish marinated in a tangy lemon-onion sauce and cooked until tender with sweet caramelized onions. This african-inspired seafood ready in about 45 minutes pairs large, thinly sliced onions, fresh lemon juice, minced garlic cloves for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 320 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.
Ingredients
- 4 fillets (about 1.5 lbs) white fish fillets (e.g. tilapia or cod)
- 3 large, thinly sliced onions
- 1/3 cup fresh lemon juice
- 3, minced garlic cloves
- 2 tbsp Dijon mustard
- 4 tbsp olive oil
- 2 tbsp white vinegar
- 1 tsp black pepper
- 1 1/2 tsp salt
- 2 tbsp chopped fresh parsley
- 1/2 cup water
Instructions
- Step 1: In a large bowl, combine 1/3 cup fresh lemon juice, 2 tbsp Dijon mustard, 3 minced garlic cloves, 2 tbsp white vinegar, 1 tsp black pepper, and 1 tsp salt. Whisk together to form the marinade.
- Step 2: Add 4 white fish fillets (about 1.5 lbs) to the marinade and toss gently to coat. Cover and refrigerate for 1 hour.
- Step 3: Heat 2 tbsp olive oil in a large skillet over medium heat. Add 3 large thinly sliced onions and 1/2 tsp salt, cooking slowly for 15 minutes until onions are soft and caramelized, stirring occasionally.
- Step 4: Push onions to the side of the skillet and add the marinated fish fillets, cooking for 3-4 minutes per side until the fish is opaque and flakes easily.
- Step 5: Pour 1/2 cup water over the fish and onions, reduce heat to low, cover, and simmer for 5 minutes to meld flavors.
- Step 6: Remove from heat, drizzle with remaining 2 tbsp olive oil, sprinkle 1/2 tsp salt and 2 tbsp chopped fresh parsley over the top, and serve hot with rice or couscous.
Equipment for this recipe
Top-rated tools to make this recipe successfully.
Frequently asked questions
How long does Senegalese Fish Yassa with Caramelized Onions and Lemon take to make?
Total time is about 45 minutes (15 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 Senegalese Fish Yassa with Caramelized Onions and Lemon?
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 large, thinly sliced onions from drying out.
Can I substitute ingredients in Senegalese Fish Yassa with Caramelized Onions and Lemon?
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 Senegalese Fish Yassa with Caramelized Onions and Lemon 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 Senegalese Fish Yassa with Caramelized Onions and Lemon?
African seafood 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.
