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Creamy Keto Tuscan Salmon Recipe with Easy Pickled Onions Guide

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Tender salmon fillets in a rich, velvety cream sauce with sun-dried tomatoes, fresh spinach, and tangy pickled onions. A quick, keto-friendly, and comforting low-carb meal perfect for busy weeknights or special occasions.

Ingredients

Scale
  • 4 salmon fillets (6 oz / 170 g each), skin-on or skinless, fresh or thawed
  • Salt and freshly ground black pepper, to taste
  • 2 tablespoons olive oil (extra virgin preferred)
  • 2 tablespoons unsalted butter, divided
  • 3 cloves garlic, minced
  • 1 cup heavy cream (full-fat)
  • ½ cup grated Parmesan cheese (Parmigiano-Reggiano recommended)
  • 1 cup fresh baby spinach leaves, roughly chopped
  • ½ cup sun-dried tomatoes, chopped (packed in oil recommended)
  • 1 teaspoon Italian seasoning (or mix of dried basil, oregano, and thyme)
  • Juice of half a lemon
  • Fresh parsley, chopped, for garnish (optional)
  • 1 small red onion, thinly sliced
  • ½ cup apple cider vinegar
  • ½ cup water
  • 1 tablespoon erythritol or preferred keto-friendly sweetener
  • 1 teaspoon salt
  • Optional: a pinch of red pepper flakes

Instructions

  1. Prepare the Pickled Onions: In a small saucepan, combine apple cider vinegar, water, sweetener, salt, and red pepper flakes if using. Bring to a gentle simmer until sweetener and salt dissolve, about 3-4 minutes. Place thinly sliced red onions in a heatproof jar or bowl, pour hot pickling liquid over them, and let sit at room temperature while preparing salmon.
  2. Season the Salmon: Pat salmon fillets dry with paper towels. Season both sides generously with salt and freshly ground black pepper.
  3. Cook the Salmon: Heat 2 tablespoons olive oil in a skillet over medium-high heat. Add salmon fillets skin-side down if skin-on. Cook without moving for 4-5 minutes until skin is crisp and releases easily. Flip and cook another 3-4 minutes until cooked through but moist. Remove salmon and set aside on a warm plate.
  4. Make the Creamy Tuscan Sauce: Lower heat to medium and add 1 tablespoon butter. Once melted, sauté minced garlic for 30 seconds until fragrant. Pour in heavy cream and bring to a gentle simmer. Stir in Parmesan cheese until melted and sauce thickens slightly, about 2-3 minutes.
  5. Add Veggies & Seasoning: Stir in sun-dried tomatoes, fresh spinach, and Italian seasoning. Cook 1-2 minutes until spinach wilts and sauce blends. Add lemon juice and remaining tablespoon of butter. Taste and adjust seasoning.
  6. Combine and Serve: Return salmon fillets to the pan, nestle into sauce, and spoon sauce over each fillet. Top with drained pickled onions and garnish with chopped parsley if desired. Serve immediately.

Notes

Pat salmon dry before cooking for a good sear. Do not overcrowd the pan. Use medium-high heat for searing. Let salmon rest after cooking. Add butter at the end for silky sauce. Don’t overcook spinach. Use fresh garlic for best flavor. If sauce is too thick, add water or broth; if too thin, simmer longer.

Nutrition

Keywords: keto salmon, Tuscan salmon, creamy salmon recipe, low-carb dinner, pickled onions, keto dinner, healthy salmon, easy keto recipe

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