Grilled Flounder with Avocado Sauce

Brighten Your Dinner Table with Grilled Flounder and Creamy Avocado Sauce.

Discover the perfect combination of fresh flavors and vibrant colors with Grilled Flounder with Avocado Sauce. This healthy, quick-to-make recipe features tender flounder fillets seasoned with cumin and topped with a creamy avocado sauce infused with lime, cilantro, and a touch of heat.

Ideal for weeknight dinners or light entertaining, this dish delivers both simplicity and sophistication. Pair it with roasted vegetables, quinoa, or a fresh salad for a balanced and satisfying meal.

Ready in under 30 minutes, this recipe is a must-try for seafood lovers and health-conscious foodies alike. 

Ingredients

For the Flounder:

⦁ 2 tbsp canola oil
⦁ 1 tsp ground cumin
⦁ ⅛ tsp salt
⦁ ⅛ tsp freshly ground black         pepper
⦁ 4 (5-oz) flounder fillets 

For the Avocado Sauce:

⦁ 1 clove garlic, minced
⦁ ½ Hass avocado, peeled and       pitted
⦁ 2 tbsp chopped fresh cilantro     leaves, plus extra for garnish
⦁ ½ cup nonfat plain Greek             yogurt
⦁ 2 tsp green hot sauce (e.g.,           Tabasco)
⦁ 1 tbsp fresh lime juice
⦁ 3 tbsp whole milk 

Preparation

1. Prepare the Grill: Preheat an outdoor grill to medium-high heat (190–200°C / 375–400°F), or heat a grill over medium-high.

2. Season the Fish: In a medium bowl, whisk together canola oil, cumin, salt, and pepper. Brush the mixture over both sides of the flounder fillets and set aside.

3. Make the Sauce: In a blender or food processor, combine avocado, garlic, cilantro, yogurt, hot sauce, and lime juice. Blend until smooth. Add the milk and puree until the sauce reaches a silky consistency. Adjust seasoning to taste and set aside.

4. Grill the Flounder: Grill the fillets for about 3 minutes on each side, or until the fish is opaque and flakes easily with a fork. Grill for 3–4 minutes per side, flipping carefully with a wide spatula. The fish is done when it flakes easily with a fork.

5. Assemble and Serve: Place each fillet on a plate and top with ½ cup avocado sauce. Garnish with fresh cilantro leaves and serve immediately. 

Tips

🛒 Choosing Ingredients:
✔ Flounder: Choose fresh, firm, and mild-smelling flounder fillets. If fresh isn’t available, frozen fillets work well—just thaw them properly before cooking.
✔ Avocados: Use ripe but firm avocados for a creamy, smooth sauce. Overripe avocados can make the sauce too mushy.
✔ Citrus & Herbs: Fresh lime juice, cilantro, and garlic enhance the sauce’s bright, zesty flavor.

👩‍🍳 Preparation:
✔ Pat the Fish Dry: Before seasoning, pat the flounder dry with a paper towel to help it sear properly and prevent sticking.
✔ Marinate Lightly: Brush fillets with olive oil, lime juice, salt, pepper, and a pinch of paprika. Let sit for 10–15 minutes—too long, and the acid can break down the delicate fish.
✔ Making the Avocado Sauce: Blend avocado, lime juice, cilantro, garlic, olive oil, and a bit of Greek yogurt for extra creaminess. Adjust with water for desired consistency.

🍳 Cooking:
✔ Preheat the Grill: Ensure the grill is medium-high heat (190–200°C / 375–400°F) before cooking to prevent sticking.
✔ Use a Grill Basket or Foil: Flounder is delicate—grill directly on a well-oiled grate, or use a grill basket or foil with holes to prevent breaking.
✔ Timing is Key: Grill for 3–4 minutes per side, flipping carefully with a wide spatula. The fish is done when it flakes easily with a fork.

📦 Storage:
✔ Refrigeration: Store grilled flounder in an airtight container in the fridge for up to 2 days. Reheat gently in a pan or oven to maintain texture.
✔ Avocado Sauce: Best enjoyed fresh, but can be stored in the fridge for 1 day with plastic wrap pressed directly on the surface to prevent browning.

🍽 Serving:
✔ Garnishing: Drizzle with extra avocado sauce, fresh lime juice, and chopped cilantro for a burst of freshness.
✔ Pairing: Serve with grilled veggies, quinoa, or a fresh mango salsa for a vibrant, summery meal.

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