Preheat your oven to 425°F (220°C) for the asparagus and sweet potato.
Peel and dice the sweet potato into small cubes. Toss with a drizzle of olive oil, salt, and pepper, then spread them out on a baking sheet.
Trim the tough ends off the asparagus, toss with a bit of olive oil, salt, and pepper, and arrange them next to the sweet potatoes.
Roast the sweet potato and asparagus in the preheated oven for 20-25 minutes until the sweet potato is tender and the asparagus is crisp-tender.
While the vegetables roast, pat the salmon dry with a paper towel. Season both sides with salt and pepper.
Heat a non-stick skillet over medium-high heat. Once the skillet is hot, add the salmon fillet skin-side down and sear for about 3-4 minutes.
Flip the salmon and cook for an additional 3-4 minutes until the salmon is just cooked through.
Squeeze a lemon wedge over the cooked salmon for a burst of freshness.
For the sweet potato mash, place the roasted sweet potato cubes in a bowl. Using a fork or potato masher, lightly mash them, leaving some texture.
Plate the salmon alongside a serving of sweet potato mash and roasted asparagus. Enjoy immediately!