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Grilled Swordfish Spaghetti Squash

Grilled Swordfish Spaghetti Squash

By Kate

Swordfish steaks seared to golden, paired with spaghetti squash strands tossed with a bright tomato sauce infused with shallots and fresh herbs. A sharp parmesan and parsley blend lifts the squash while white wine adds depth to the sauce. Substitutions like cod or trout work well. Cooking times adjusted for squash tenderness and fish thickness. Technique tips ensure perfect sear and balanced moisture. Sauce acidity cut with a pinch of sugar. Practical advice on managing squash cleanup and fish doneness indicators.
Prep: 20 min
Cook:
Total:
Serves: 4 servings
seafood gluten-free healthy dinner Mediterranean
Introduction
Squash roasting smell fills kitchen. Squash done when squash fibers pull free easily but not mush. Tomato sauce must brighten, acidity balanced; wine helps but never overpower. Searing swordfish needs hot pan, no overcrowding or fish steams instead. Holding fish longer ruins texture, better cook in batches or serve immediately. Mixing cheese into squash keeps strands moist, sharp cheese cuts through the sweetness. Parsley freshens before serving; thyme in sauce adds depth. Meat and veg in perfect balance. Substitutions help when swordfish pricey or unavailable. Use cod or trout with same method; cooking times vary. Squash cleanup? Line tray with parchment for easy cleanup, saves frustration. Sauce adjustments easy; add pinch sugar or splash vinegar depending on acidity. Flavor layering critical: soft shallots and garlic before wine prevent harsh garlic bites.

Ingredients

  • 1 medium spaghetti squash about 1.3 kg (3 lb)
  • 3 shallots minced fine
  • 2 cloves garlic minced
  • 70 ml (5 tbsp) extra virgin olive oil
  • 50 ml (3 tbsp) dry white wine
  • 1 small can 300 ml (10 oz) crushed San Marzano tomatoes
  • 25 ml (1 1/2 tbsp) freshly chopped thyme
  • 4 swordfish steaks 150 g (5 oz) skin removed or substitute cod/trout
  • 50 ml (3 tbsp) chopped flat leaf parsley
  • 90 ml (1/3 cup) aged Asiago cheese grated
  • Salt freshly ground pepper
  • Optional pinch sugar
  • About the ingredients

    Increasing olive oil by 20% makes sure enough fat to keep squash moist without greasiness. Asiago cheese swapped for parmesan for nuttier flavor and better melting properties. Thyme replaces basil for earthier note that stands up to tomato and fish. Wine quantity slightly reduced to prevent sauce from becoming too sharp or alcoholic. Swordfish quality crucial – fresh firm texture most important; if unavailable, cod or trout can substitute but cooking times must reduce due to flakier texture. Squash size chosen a bit larger for more yield to feed 4 portions comfortably, fibers more developed for a satisfying bite. Garlic minced fine to avoid bites of raw toughness, sweat gently to draw out sweetness. Salt carefully throughout process to balance flavors but avoid drying squash or fish. Parchment paper under squash crucial to ease cleaning – burnt squash juices stick badly.

    Method

  • Set oven rack mid-level and preheat at 185 °C (365 °F).
  • Cut squash lengthwise, scoop seeds out. Season cavity with salt pepper. Place cut side down on parchment-lined baking sheet. Roast 40 to 50 minutes until fleshy part yields easily to a skewer; avoid overcooking – threads get soggy.
  • Let squash sit cool then scrape flesh with fork into bowl. Salt and pepper lightly, toss gently. Keep warm under foil or low heat to avoid drying out.
  • Meanwhile heat 35 ml oil in a skillet over medium heat. Sweat shallots and garlic slowly until softened and fragrant – no browning. Splash in wine, let bubble till nearly all evaporated.
  • Add crushed tomatoes and a pinch of sugar to balance acidity. Raise heat briefly to a lively simmer. Cook 6 minutes or until sauce thickens slightly. Stir in thyme. Taste adjust salt pepper. Remove from heat.
  • Heat remaining 35 ml oil in nonstick pan until shimmering and hot but not smoking.
  • Pat swordfish dry with paper towel. Season both sides with salt pepper. Sear 2-3 minutes per side depending on thickness. Fish should brown nicely, flesh firm but moist, still slightly translucent in center – overcooked swordfish turns chalky and dries out.
  • Off heat, stir parsley and Asiago cheese into the spaghetti squash strands. Keep warm gently making sure cheese melts without cooking further.
  • Plate by nestling squash mixture slightly mounded. Spoon tomato sauce over and around. Top with swordfish steak. Finish with extra parsley if desired.
  • Serve immediately avoiding holding times which degrade texture and visual appeal.
  • Technique Tips

    Oven temperature set to slightly lower than original, extending roast time to avoid overbaking which makes squash watery and mushy. Cut squash ideally equal halves to ensure even cooking. Roast cut side down traps steam, helps tenderize while preventing drying. Fork test critical; soft but not collapsing. Shallots sweat slowly until translucent first, no caramelization – gives softened flavor without bitterness. Reducing wine nearly dry concentrates acidity and leaves clean fruit taste. Tomato sauce simmered briefly; signals steam rising but not bubbling furiously. Adding herbs off heat preserves fresh green notes. Oil heating to shimmering shows ready pan. Searing fish with dry surface is essential for good crust; pat fish completely dry before seasoning. Watch color closely – golden dark crust means flavor, black char means burnt and bitter. Fish thickness determines timing; thinner requires less time. Addition of cheese and parsley last step – melting cheese throughout strands gives creamy texture. Serve shortly after plating. Sauce poured in modest amount keeps plate tidy and concentrates flavor. Cleanup tip: use parchment under squash, keep warm covered squash strands to avoid drying during rest.

    Chef's Notes

    • 💡 Use a fork to check spaghetti squash. Flesh should pull away easily but still be firm. Overcooking ruins texture; threads get mushy, pasty mess.
    • 💡 Make sure to sweat shallots slowly. They release sweetness without browning. Patience here crucial; rush it, bitterness takes over.
    • 💡 Searing swordfish requires correctly heated pan. Hot but not smoking. Fish should sizzle sharply; overcrowding makes it steam, waste texture.
    • 💡 Don't forget to taste sauce; adjust acidity with a pinch of sugar if it’s too sharp. Small changes vastly improve balance.
    • 💡 Cleanup tip: line pan with parchment paper underneath squash. Saves time scrubbing burnt juices off. Always a messy task otherwise.

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