Preheat the 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 the gochujang, soy sauce, sesame oil, honey (or maple syrup), garlic powder, and ginger powder.
Once the quinoa has rested, fluff it with a fork and stir in the gochujang mixture until well combined.
Spread the quinoa mixture evenly in a greased baking dish. Place the salmon fillet on top of the quinoa. Drizzle olive oil over the salmon and season with salt and pepper. Cover the dish with aluminum foil.
Bake in the preheated oven for 20-25 minutes, or until the salmon is cooked through and flakes easily with a fork. Remove the foil for the last 5 minutes of baking to allow the salmon to brown slightly.
Once done, remove from the oven and let it cool for a few minutes. Garnish with sliced green onions and sesame seeds before serving.