Preheat your oven to 400°F (200°C) and line a baking sheet with parchment paper.
Trim the woody ends off the asparagus and toss the spears with half of the olive oil, minced garlic, salt, and pepper.
Spread the asparagus on the baking sheet and roast for 12-15 minutes until tender and slightly charred.
Peel and dice the sweet potato, then boil or steam until soft, approximately 10-12 minutes.
Drain the sweet potato and mash thoroughly, adding a splash of water or a teaspoon of lemon juice to reach a creamy consistency.
Season the salmon fillet with salt and pepper. Heat the remaining olive oil in a non-stick skillet over medium-high heat.
Place the salmon in the pan skin-side down and sear for 4-5 minutes until the skin is crispy, then flip and cook for another 2-3 minutes.
Plate the sweet potato mash, arrange the roasted asparagus alongside, and top with the seared salmon.
Finish the dish with a fresh squeeze of lemon juice over the salmon and vegetables.