Step 1: Preheat Oven and Prep Ingredients

Start by preheating your oven to 400°F (200°C). Line a baking sheet with parchment paper or foil for easy cleanup. Rinse the asparagus and snap off the woody ends. Pat the salmon fillets dry with paper towels.

Step 2: Make the Marinade or Sauce (Optional)

In a small bowl, mix together olive oil, Dijon mustard, honey, soy sauce, minced garlic, lemon zest, and seasoning. This adds flavor and moisture to your salmon. If you prefer a dry rub, combine salt, pepper, paprika, and herbs instead.

Step 3: Arrange Salmon and Asparagus on Sheet Pan

Place the salmon fillets skin-side down on one side of the baking sheet. Brush or spoon the marinade over the tops of each fillet. On the other side, add trimmed asparagus spears. Drizzle with olive oil, salt, and pepper. Toss lightly to coat.

Step 4: Roast in the Oven

Roast the salmon and asparagus in the preheated oven for 12 to 15 minutes, depending on the thickness of your salmon. For fillets that are 1-inch thick, 12 minutes is usually perfect. The asparagus should be tender and slightly charred on the tips.

Step 5: Finish and Serve

Remove from the oven and squeeze fresh lemon juice over the salmon and asparagus. Garnish with herbs and red pepper flakes if desired. Serve immediately with your favorite sides or on its own for a light, complete meal.