Preheat your oven to 400°F.
Toss the asparagus spears lightly with a drizzle of olive oil, a pinch of salt, and a dash of black pepper, then spread them on a baking sheet.
Place the asparagus in the oven and roast for 10-12 minutes until tender and slightly charred.
Meanwhile, season the salmon fillet on both sides with salt, black pepper, and garlic powder.
Heat a non-stick skillet over medium-high heat and add a small splash of olive oil. Once shimmering, place the salmon skin-side down and sear for about 3-4 minutes until a golden crust forms.
Carefully flip the salmon and cook for an additional 3-4 minutes until the center reaches your preferred doneness.
Steam the cauliflower until very tender, about 8-10 minutes.
Transfer the steamed cauliflower to a blender or food processor. Add the nonfat Greek yogurt, a pinch of salt, and pepper. Blend until smooth and creamy to form the mash.
Plate the seared salmon alongside a serving of cauliflower mash and roasted asparagus. Serve immediately.