Peel and dice the sweet potato into small cubes, then boil in water until tender, about 10-12 minutes.
Drain the sweet potatoes and mash them until smooth, adding a splash of hot water if needed to reach a velvety consistency.
While potatoes boil, trim the ends of the green beans and steam them for 3-4 minutes until bright green and tender-crisp.
Heat one teaspoon of olive oil in a non-stick skillet over medium-high heat.
Season the salmon fillet with sea salt and pepper, then place it in the skillet skin-side down.
Sear the salmon for 4-5 minutes per side until the exterior is golden and the center is just opaque.
In a separate small pan, heat the remaining teaspoon of olive oil and sauté the minced garlic for 30 seconds until fragrant.
Toss the steamed green beans in the garlic oil until well coated.
Plate the mashed sweet potatoes alongside the garlic green beans and top with the seared salmon fillet.