01 - Preheat oven to 400°F (200°C). Line a baking sheet with parchment paper.
02 - Gently pat salmon fillets dry and arrange them on the prepared baking sheet. Brush each piece with olive oil and season with salt, pepper, garlic powder, and chopped dill. Lay a lemon slice on each fillet.
03 - Bake the salmon for 12 to 15 minutes, or until the flesh is opaque and flakes easily when pressed with a fork.
04 - While salmon bakes, heat olive oil or butter in a medium saucepan over medium heat. Add chopped onion and sauté for 2 to 3 minutes until softened, then add minced garlic and cook for 30 seconds, stirring constantly.
05 - Stir in the rice, ensuring grains are coated in the oil. Pour in water or broth, add lemon zest, dill, salt, and pepper. Bring to a boil, then reduce heat to low. Cover and simmer for 15 minutes.
06 - Remove saucepan from heat and let the rice rest, covered, for 5 minutes. Fluff gently with a fork before serving.
07 - Plate the baked salmon over a generous bed of dill rice. Garnish with additional dill or lemon wedges, if desired.