Preheat the oven to 425°F (220°C). Toss the broccoli florets with olive oil, salt, and pepper, then spread them evenly on a baking sheet.
Roast the broccoli in the oven for about 15-20 minutes until tender with slightly crispy edges.
While the broccoli roasts, season the salmon fillet with salt, pepper, a squeeze of lemon juice, and minced garlic.
Heat a non-stick skillet over medium-high heat. Once hot, add the salmon, skin side down if applicable, and sear for about 3-4 minutes until a nice golden crust forms.
Flip the salmon and cook for another 3-4 minutes depending on thickness until the fish is just opaque in the center.
Prepare the quinoa according to package instructions if not already cooked. Fluff with a fork.
Plate the seared salmon alongside the roasted broccoli and a serving of quinoa. Drizzle any remaining lemon juice over the salmon for extra zest.
Serve immediately and enjoy your balanced, nutritious dinner.