Instructions:
- Preheat oven to 400°F (200°C). Toss the halved fingerling potatoes with 2 Tbsp olive oil, salt, and pepper directly on a large rimmed baking sheet.
- Spread potatoes in a single layer and roast for 15 minutes to give them a head start.
- While potatoes roast, prepare the crust: combine the zest of one lemon, parsley, dill, minced garlic, Panko, 2 Tbsp olive oil, and a pinch of salt/pepper in a small bowl. Mix well.
- Pat the salmon fillets very dry with paper towels. Lightly brush the top of each fillet with Dijon mustard.
- Evenly press the herb/Panko mixture onto the mustard-coated side of each salmon fillet. Top the salmon with thin slices of the remaining lemon.
- In a separate bowl, toss the trimmed asparagus with 1 Tbsp olive oil and a pinch of salt.
- After 15 minutes, push the potatoes to one side of the baking sheet. Place the crusted salmon fillets on the empty space and arrange the seasoned asparagus around them.
- Return the tray to the oven and bake for another 15–18 minutes, or until the salmon flakes easily (internal temperature 145°F/63°C) and vegetables are tender.
- Remove from oven, let rest for 5 minutes before serving immediately.