Stuffed Mediterranean Swordfish

Seafood

March 2, 2026

A smiling woman in a bright kitchen holding a plate of grilled Stuffed Mediterranean Swordfish filled with sautéed spinach and crumbled feta cheese.

There is nothing quite like a meal that feels like a five-star restaurant experience but only takes 30 minutes to whip up in your own kitchen. I’ve been experimenting with different seafood techniques lately, and this Stuffed Mediterranean Swordfish has quickly become a household favorite. Using AIOSEO best practices, I’ve optimized this post to make sure you can find all the tips and tricks easily. The combination of briny feta, earthy spinach, and a hint of lemon makes this swordfish absolutely sing!

Why This Stuffed Mediterranean Swordfish Works

When you are looking for a high-protein, low-carb dinner, swordfish is the ultimate "steak of the sea." The "stuffing" technique used in this Stuffed Mediterranean Swordfish keeps the lean fish incredibly moist while infusing it with garlic and lemon from the inside out.

Secrets to the Perfect Stuffed Mediterranean Swordfish

To ensure your Stuffed Mediterranean Swordfish doesn't fall apart on the grill, make sure your fish is at least 2 inches thick. This allows you to create a sturdy pocket for the spinach and feta. If you’re worried about the stuffing escaping, you can secure the opening with a couple of toothpicks before grilling.

Ingredients

  • 8.0 oz (227g) swordfish steak (2.0 to 3.0 inches thick)
  • 1.0 tbsp (15g) fresh lemon juice
  • 1.0 tbsp (13.5g) olive oil (for marinade)
  • 1.0 tsp (4.5g) olive oil (for sautéing)
  • 1.0 garlic clove (5g), minced
  • 1.0 cup (30g) fresh spinach, rinsed and finely minced
  • 0.25 cup (38g) crumbled feta cheese

Cooking Directions

  1. Preheat the grill to high heat and lightly grease the grill grates with a thin coating of olive oil.
  2. Carefully cut a horizontal slit into the center of the 8.0 oz (227g) swordfish steak to create a deep pocket, keeping the three other sides intact.
  3. In a small bowl, whisk together the 1.0 tbsp (15g) of lemon juice and 1.0 tbsp (13.5g) of olive oil, then brush the mixture evenly onto both sides of the fish.
  4. Heat the remaining 1.0 tsp (4.5g) of olive oil in a small skillet over medium-low heat.
  5. Add the 1.0 minced garlic clove (5g) to the skillet and sauté for approximately 0.5 minutes until fragrant.
  6. Incorporate the 1.0 cup (30g) of spinach into the skillet and cook for 3.0 to 5.0 minutes, or until the leaves are fully wilted.
  7. Remove the skillet from the heat and carefully spoon the wilted spinach mixture into the swordfish pocket.
  8. Evenly scatter the 0.25 cup (38g) of crumbled feta cheese over the spinach inside the pocket.
  9. Place the fish on the preheated grill grates and cook for 9.0 minutes.
  10. Gently flip the steak and continue grilling until the swordfish is completely opaque and firm.
  11. Remove the Stuffed Mediterranean Swordfish from the grill and serve immediately while warm.

Nutritional Information (Per Serving)

  • Calories: 317 kcal
  • Total Fat: 20.8g
  • Total Carbs: 4.1g
  • Dietary Fiber: 2.2g
  • Net Carbs: 1.9g
  • Protein: 27.8g

Pro Tips for the Perfect Stuffed Mediterranean Swordfish

  • Choose the Right Cut: Always opt for a steak that is at least 2.0 to 3.0 inches (5.0 to 7.5cm) thick. A thinner cut is much harder to "pocket" without tearing the delicate meat, and a thicker steak holds the spinach and feta stuffed fish filling more securely.
  • Pat the Fish Dry: Before brushing on your lemon and olive oil marinade, pat the swordfish dry with a paper towel. This ensures the oil adheres better and helps you achieve those professional-looking sear marks on the grilled swordfish recipe.
  • Squeeze the Spinach: After sautéing your 1.0 cup (30g) of spinach, if there is excess moisture in the pan, give it a light squeeze or drain it. Keeping the stuffing relatively dry prevents the Stuffed Mediterranean Swordfish from becoming soggy during the 9.0-minute grilling process.

Frequently Asked Questions (FAQ)

1. How do I know when the Stuffed Mediterranean Swordfish is fully cooked? Swordfish is cooked when the meat turns from translucent to a solid, pearly white (opaque) and reaches an internal temperature of 145°F (63°C). Because this is a high protein seafood dish, it can go from juicy to dry quickly, so keep a close eye on it during the final minutes.

2. Can I make this recipe in a pan if I don't have a grill? Absolutely! This lemon garlic swordfish works beautifully in a cast-iron skillet or a heavy-bottomed pan. Use medium-high heat and sear it for about 5.0 to 7.0 minutes per side to get that golden-brown crust that characterizes easy 30-minute meals.

3. Is swordfish suitable for a Keto or Mediterranean diet? Yes, this is one of the best low carb Mediterranean recipes you can make. It is naturally keto-friendly fish recipe material because it is high in healthy fats and protein while remaining extremely low in net carbs.

4. What should I serve with this stuffed fish? To keep it within the theme of Mediterranean diet recipes, I recommend serving this alongside a light Greek salad, roasted asparagus, or a small portion of lemon-infused quinoa.

I truly hope you give this Stuffed Mediterranean Swordfish a try for your next Friday night dinner or special occasion! It is the ultimate healthy seafood dinner that proves you don’t need hours in the kitchen to produce a gourmet result. Whether you are looking for high protein seafood to fuel your workout or just want more Mediterranean diet recipes in your rotation, this spinach and feta stuffed fish is a total crowd-pleaser. Mastering the grilled swordfish recipe is a great skill for any home cook, and this lemon garlic swordfish version is a delicious place to start. If you enjoyed this, please leave a rating below—it helps others find these easy 30-minute meals more easily!

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