Oven-Baked Salmon with Charred Onions & Old Bay Radishes


The charred onion puree is both smoky and sweet, a nice foil for this simple baked salmon recipe. Serve this healthy salmon recipe with a glass of crisp, dry rosé for an easy dinner that's special enough for company. Environmental note: If you are deciding between farmed and wild salmon for this recipe, you should know that either one can be a sustainable choice: While farmed salmon historically has gotten a bad rap, many options now rate as Best Choice and Good Alternative by Monterey Bay Aquarium's Seafood Watch program. Use wild Pacific salmon if you prefer (most comes from well-managed fisheries), but check for doneness a few minutes early as it's typically leaner.

Prep Time:
30 mins
Additional Time:
15 mins
Total Time:
45 mins
4 servings


  • 2 medium onions, sliced 1/2 inch thick

  • 4 tablespoons extra-virgin olive oil, divided

  • Zest of 2 lemons

  • 1 ½ teaspoons cracked pepper

  • 1 teaspoon kosher salt, divided

  • 4 (5 ounce) skin-on salmon fillets

  • 6 large radishes, cut into wedges, plus more thinly sliced for garnish

  • 1 teaspoon Old Bay seasoning

  • ½ teaspoon sugar

  • Fresh cilantro & flaky sea salt for garnish


  1. Preheat oven to 325 degrees F.

  2. Heat a large cast-iron skillet over high heat. Add onions and cook, pressing down occasionally, until completely charred on one side, 10 to 15 minutes. Turn and cook, pressing down occasionally, until charred on the second side, 8 to 10 minutes more. Transfer to a large bowl and cover tightly. Let steam for 15 minutes.

  3. Meanwhile, mix 2 tablespoons oil, lemon zest, pepper and 1/2 teaspoon salt in a small bowl. Add 1 tablespoon oil to a medium ovenproof nonstick or cast-iron skillet and add salmon, skin-side down. Spread the lemon zest mixture on the salmon. Bake until just cooked through, 14 to 16 minutes.

  4. Bring a small saucepan of water to a boil. Add radish wedges and cook until just tender, 5 to 6 minutes. Drain and pat dry. Dry the pan and add the remaining 1 tablespoon oil and Old Bay. Heat over medium heat until sizzling, about 1 minute. Remove from heat and stir in the radish wedges. Cover and keep warm.

  5. Combine the onions, the remaining 1/2 teaspoon salt and sugar in a food processor; puree until smooth.

  6. Serve the salmon with the onion puree and radishes. Garnish with sliced radishes, cilantro and flaky salt, if desired.

Nutrition Facts (per serving)

324 Calories
19g Fat
7g Carbs
29g Protein
Nutrition Facts
Servings Per Recipe 4
Serving Size 4 oz salmon, 1/4 cup onion & 1/4 cup radishes
Calories 324
% Daily Value *
Total Carbohydrate 7g 3%
Dietary Fiber 2g 6%
Total Sugars 3g
Added Sugars 1g 2%
Protein 29g 58%
Total Fat 19g 25%
Saturated Fat 3g 17%
Cholesterol 66mg 22%
Vitamin A 213IU 4%
Vitamin C 14mg 15%
Folate 30mcg 8%
Sodium 718mg 31%
Calcium 80mg 6%
Iron 1mg 6%
Magnesium 49mg 12%
Potassium 653mg 14%

Nutrition information is calculated by a registered dietitian using an ingredient database but should be considered an estimate.

* Daily Values (DVs) are the recommended amounts of nutrients to consume each day. Percent Daily Value (%DV) found on nutrition labels tells you how much a serving of a particular food or recipe contributes to each of those total recommended amounts. Per the Food and Drug Administration (FDA), the daily value is based on a standard 2,000 calorie diet. Depending on your calorie needs or if you have a health condition, you may need more or less of particular nutrients. (For example, it’s recommended that people following a heart-healthy diet eat less sodium on a daily basis compared to those following a standard diet.)

(-) Information is not currently available for this nutrient. If you are following a special diet for medical reasons, be sure to consult with your primary care provider or a registered dietitian to better understand your personal nutrition needs.

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