Preheat your oven to 400°F and line a small baking sheet with parchment paper.
Trim the woody ends off the asparagus, place them on the baking sheet, and season with a pinch of sea salt and pepper.
Roast the asparagus for 10 to 12 minutes until tender but still vibrant green.
While the asparagus roasts, steam the cauliflower florets until they are fork-tender, about 8 to 10 minutes.
Transfer the steamed cauliflower to a blender or food processor along with the Greek yogurt, minced garlic, and a pinch of salt, then process until smooth and creamy.
Pat the salmon fillet dry with a paper towel and season both sides with salt and pepper.
Heat the ghee in a non-stick skillet over medium-high heat.
Place the salmon in the skillet skin-side down and sear for 4 to 5 minutes until the skin is crispy.
Flip the salmon carefully and cook for another 3 to 4 minutes until the internal temperature reaches 145°F.
Plate the creamy cauliflower mash, top with the seared salmon, and serve alongside the roasted asparagus with a fresh squeeze of lemon juice.