Preheat your oven to 425°F. Line a baking sheet with parchment paper.
Wash the asparagus and trim the tough ends. Toss the asparagus in 1 teaspoon olive oil, salt, and pepper.
Peel and cut the sweet potato into small cubes. Toss with the remaining 1 teaspoon olive oil, salt, and pepper.
Spread the asparagus and sweet potato cubes on the baking sheet in a single layer and roast in the oven for 20-25 minutes until tender and crispy, stirring halfway through.
While the vegetables roast, season the 6 oz sirloin steak generously with salt and pepper. Heat a skillet over medium-high heat.
Once the skillet is hot, add the steak and sear for about 3-4 minutes on each side for medium-rare, or adjust the time to your preferred doneness.
Allow the steak to rest for a few minutes, then slice against the grain.
Plate the sliced steak with the roasted asparagus and crispy sweet potatoes, and serve immediately.