Preheat your oven to 400°F.
Season the salmon fillet with salt, pepper, and a squeeze of lemon juice.
Heat a non-stick skillet over medium-high heat. Sear the salmon skin-side down for about 3-4 minutes, then flip and cook for an additional 2-3 minutes until just cooked through.
Meanwhile, trim the asparagus and toss them in a small bowl with a drizzle of olive oil, salt, pepper, and minced garlic.
Spread the asparagus on a baking sheet and roast in the preheated oven for about 10-12 minutes until tender and slightly crispy.
For the cauliflower mash, steam or boil the cauliflower until soft, about 8-10 minutes. Drain well and transfer to a bowl.
Add 0.5 tablespoon of olive oil, a little salt and pepper, and a squeeze of lemon juice to the cauliflower. Mash until smooth and creamy.
Plate the seared salmon alongside the roasted asparagus, and add a generous serving of cauliflower mash. Serve immediately and enjoy!