Preheat your oven to 400°F and line a small baking sheet with parchment paper.
Place the asparagus spears on the baking sheet, mist with a tiny bit of water or a drop of oil, and season with salt and pepper.
Roast the asparagus for 10-12 minutes until tender but still bright green.
While asparagus roasts, steam the cauliflower florets until very soft, about 8-10 minutes.
Drain the cauliflower well and place in a food processor with half the ghee and the minced garlic clove, blending until smooth and velvety.
Pat the salmon fillet dry with a paper towel and season both sides with salt and pepper.
Heat the remaining half teaspoon of ghee in a non-stick skillet over medium-high heat.
Place the salmon in the pan skin-side up and sear for 3-4 minutes until a golden crust forms.
Flip the salmon and cook for another 2-3 minutes until the desired doneness is reached.
Plate the cauliflower mash first, top with the seared salmon, and serve the roasted asparagus on the side.
Finish the dish with a fresh squeeze of lemon juice over the salmon and greens.