Pat the salmon fillet dry and season both sides with salt and pepper.
Heat a non-stick skillet over medium-high heat. Once hot, add the salmon skin-side down and sear for about 3-4 minutes until the skin is crisp.
Flip the salmon and cook for an additional 3-4 minutes, or until just cooked through. Remove from heat and set aside.
While the salmon cooks, bring a small pot of water to a boil and add a steamer basket. Place the asparagus in the basket and steam for about 3-4 minutes until tender yet crisp.
For the cauliflower mash, cut the cauliflower into florets and boil in lightly salted water until tender, approximately 8-10 minutes.
Drain the cauliflower and transfer to a blender or food processor. Add the olive oil, butter, garlic, and a pinch of salt and pepper. Blend until smooth and creamy.
Plate the seared salmon with a serving of steamed asparagus and a generous scoop of cauliflower mash. Serve immediately and enjoy your balanced, flavorful dinner.