Roast Salmon With Leeks Onions (Printable)

Roast salmon with leeks, onions, and vibrant parsley dressing. Gluten-free, dairy-free, and ready in 40 minutes.

# What You'll Need:

→ Fish & Vegetables

01 - 4 salmon fillets (about 5.3 oz each), skin-on
02 - 2 large leeks, trimmed and sliced into 1/2-inch rounds
03 - 1 large red onion, sliced into wedges
04 - 2 tablespoons olive oil
05 - 1/2 teaspoon sea salt
06 - 1/4 teaspoon black pepper
07 - 1 lemon, sliced

→ Parsley Dressing

08 - 1 cup fresh flat-leaf parsley, finely chopped
09 - 1 small garlic clove, minced
10 - 1/2 teaspoon Dijon mustard
11 - 1 teaspoon capers, drained and chopped
12 - 1/2 teaspoon lemon zest
13 - 3 tablespoons extra-virgin olive oil
14 - 1 tablespoon fresh lemon juice
15 - Salt and pepper to taste

# How to Make It:

01 - Heat the oven to 400°F.
02 - Arrange the leeks and red onion in a single layer on a large baking sheet. Drizzle with olive oil, sprinkle with salt and pepper, and toss to coat evenly.
03 - Roast the vegetables for 10 minutes until they begin to soften and caramelize at the edges.
04 - Remove the baking sheet from the oven. Nestle the salmon fillets skin-side down among the vegetables. Arrange lemon slices over the salmon.
05 - Return to the oven and roast for 12 to 15 minutes, or until the salmon is just cooked through and vegetables are tender.
06 - In a small bowl, combine parsley, garlic, Dijon mustard, capers, lemon zest, olive oil, and lemon juice. Stir well and season with salt and pepper to taste.
07 - Transfer the roasted salmon and vegetables to plates. Spoon the parsley dressing generously over the salmon and serve immediately.

# Expert Advice:

01 -
  • Everything roasts together on one sheet, so cleanup is as simple as wiping down a single pan.
  • The parsley dressing adds a fresh, tangy contrast that makes every bite feel restaurant-worthy.
  • Its naturally gluten-free and dairy-free without tasting like it is trying to be.
  • You can have a vibrant, nourishing dinner on the table in under 45 minutes.
02 -
  • Do not overcook the salmon or it will dry out; pull it when it is just opaque in the center and still tender.
  • If your leeks are sandy, slice them first and rinse thoroughly in a bowl of cold water before draining well.
  • Make the dressing while the salmon roasts so everything finishes at the same time and stays warm.
03 -
  • Line your baking sheet with parchment paper for even easier cleanup and to prevent sticking.
  • If you like heat, add a pinch of crushed red pepper flakes to the parsley dressing for a subtle kick.
  • Let the salmon rest for a minute after roasting so the juices redistribute and every bite stays moist.
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