Rinse and pat dry the cod fillet, then lightly season it with salt and pepper.
Heat olive oil in a non-stick pan over medium-high heat until shimmering.
Place the cod in the pan and sear for about 3 minutes on one side until it develops a crispy, golden crust.
Gently flip the cod and sear the other side for an additional 3 minutes, depending on thickness, until cooked through.
While the fish is cooking, steam or lightly sauté the chopped broccoli until tender but still crisp.
In a small bowl, combine lemon juice, minced garlic, a pinch of salt, and pepper. Drizzle this mixture over the cooked broccoli, tossing gently to coat evenly.
Reheat pre-cooked quinoa if needed, and plate it as the base of the dish.
Top the quinoa with the crispy cod and arrange the lemon-garlic broccoli on the side.
Serve immediately and enjoy a balanced and flavorful meal.