Preheat your oven to 425°F and line a large baking sheet with parchment paper.
Peel the sweet potato and cut it into thin, even matchsticks to ensure they get crispy.
Toss the sweet potato fries with one teaspoon of olive oil and a pinch of sea salt on the baking sheet.
Roast the fries for 15 minutes, then flip them and move them to one side of the tray.
Add the trimmed asparagus to the other side of the tray, drizzle with the remaining teaspoon of olive oil, and roast everything for another 10 minutes.
While the vegetables roast, season the sirloin steak generously with salt, pepper, and garlic powder.
Heat a heavy cast-iron skillet over medium-high heat until very hot.
Place the steak in the hot skillet and sear for 3-4 minutes per side for a perfect medium-rare finish.
Remove the steak from the pan and let it rest on a cutting board for at least 5 minutes to keep it juicy.
Slice the steak against the grain and serve in a bowl alongside the crispy sweet potato fries and roasted asparagus.