Preheat your oven to 375°F.
In a medium saucepan, combine the rinsed quinoa and vegetable broth (or water). Bring to a boil, then reduce heat to low, cover, and simmer for 15 minutes or until the liquid is absorbed. Remove from heat and let it sit covered for 5 minutes.
In a small bowl, mix together gochujang, soy sauce, sesame oil, honey (or maple syrup), garlic powder, and ginger powder. Stir until well combined.
Place the cooked quinoa in a baking dish and pour the gochujang mixture over it. Stir to combine, ensuring the quinoa is evenly coated.
Place the salmon fillet on top of the quinoa mixture. Drizzle olive oil over the salmon and season with salt and pepper.
Cover the baking dish with aluminum foil and bake for 25 minutes. Remove the foil and bake for an additional 10-15 minutes, or until the salmon is cooked through and flakes easily with a fork.
Garnish with sliced green onions and sesame seeds before serving.