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Chimichurri Roasted Salmon with Fennel and Spinach

Chimichurri Salmon with Roasted Fennel and Spinach

Roasted salmon with caramelized fennel, sautéed spinach, and a bold chimichurri drizzle, finished with creamy avocado for a nutrient-packed, flavor-rich meal.
Prep Time 20 minutes
Cook Time 25 minutes
Total Time 45 minutes
Course Main Course
Cuisine Argentine-Inspired
Servings 4 servings
Calories 450 kcal

Ingredients
  

For the Roasted Salmon & Fennel

  • 4 salmon fillets about 5 oz each
  • 1 fennel bulb trimmed and sliced into wedges
  • 3 tablespoons extra virgin olive oil divided (some for the fennel, some for brushing the salmon)
  • 1 teaspoon salt divided (adjust to taste)
  • ½ teaspoon freshly ground black pepper divided (adjust to taste)

For the Chimichurri

  • ½ cup fresh parsley firmly packed
  • ¼ cup fresh cilantro firmly packed — use more if needed to get enough herb volume
  • 2 tablespoons red wine vinegar or to taste
  • 2 cloves garlic roughly chopped
  • ¼ teaspoon chili flakes or more if you like spice
  • ½ teaspoon dried oregano or 1 teaspoon fresh, if available
  • ¼ teaspoon salt adjust to taste
  • ¼ teaspoon freshly ground black pepper adjust to taste
  • ¼ cup extra virgin olive oil for the sauce

For the Spinach

  • 8 cups fresh spinach about 2 cups per serving, loosely packed
  • 1 tablespoon extra virgin olive oil
  • Pinch of salt and pepper

Optional

  • 1 avocado sliced into four portions (about ¼ avocado per person)

Instructions
 

Preheat the Oven

  • Preheat your oven to 400°F (200°C).

Roast the Fennel

  • Slice your fennel bulb into wedges (about ½-inch thickness).
  • Arrange fennel slices on a baking sheet.
  • Drizzle with 1–2 tablespoons of the olive oil and sprinkle with half of the salt and pepper.
  • Roast for 20–25 minutes, or until fennel is lightly caramelized. (You’ll add the salmon to the oven shortly so they can finish together.)

Prepare the Chimichurri

  • While the fennel is roasting, make the sauce.
  • In a small food processor or blender, combine:
  • Parsley
  • Cilantro
  • Red wine vinegar
  • Garlic
  • Chili flakes
  • Dried oregano
  • Salt and pepper
  • Pulse until finely chopped.
  • Slowly drizzle in ¼ cup olive oil while pulsing, until you get a rough sauce. Adjust vinegar, salt, and pepper to taste.
  • Reserve half of the chimichurri for serving and use the other half to brush onto the salmon before roasting (optional).

Season & Roast the Salmon

  • Lightly brush each salmon fillet with the remaining 1 tablespoon of olive oil (or use some of the chimichurri instead).
  • Sprinkle with the remaining salt and pepper.
  • After the fennel has roasted for about 10 minutes, push the fennel to one side of the baking sheet and place the salmon fillets on the other side.
  • Return to the oven and roast for 10–12 minutes, depending on the thickness of the salmon, until the internal temperature reaches 145°F (63°C) or until it flakes easily with a fork.

Sauté the Spinach

  • While the salmon is finishing in the oven, warm 1 tablespoon olive oil in a skillet over medium heat.
  • Add the spinach, season with a small pinch of salt and pepper, and sauté just until wilted (1–2 minutes).

Assemble & Serve

  • Place a mound of sautéed spinach on each plate.
  • Add a portion of roasted fennel.
  • Top each plate with a roasted salmon fillet.
  • Drizzle reserved chimichurri over the salmon.
  • For extra healthy fats, add ¼ avocado per plate.

Notes

Approximate Nutrition Per Serving (without avocado)

  • Calories: ~450 kcal
  • Protein: ~35 g
  • Fat: ~28 g
  • Net Carbs: ~6g (mostly from fennel and spinach)
  • Adding ¼ avocado (about 60–70 kcal) brings each serving closer to ~500 kcal total.

Meal Prep

  • Store the salmon, fennel, and spinach in separate containers. Keep the chimichurri in a sealed jar. Everything should keep well for up to 3 days in the refrigerator.
Keyword Diabetes-friendly, healthy fats, low-carb