Step 1: Preheat the Oven - Begin by preheating your oven to 400°F (200°C). This high temperature will help the fish develop a beautiful, slightly crispy exterior while remaining tender and flaky on the inside.
Step 2: Prepare the Baking Sheet - Line a baking sheet with parchment paper or aluminum foil. This ensures that the tilapia doesn't stick and makes cleanup a breeze.
Step 3: Season the Fish - In a small bowl, mix together the kosher salt, garlic powder, ground cumin, and cayenne pepper. Pat the tilapia fillets dry with paper towels, then rub the spice mixture evenly over both sides of each fillet.
Step 4: Arrange the Fish - Place the seasoned tilapia fillets on the prepared baking sheet. Drizzle the olive oil over the fish, ensuring each piece is well-coated. Scatter the small slices of butter on top of the fillets, allowing it to melt and enhance the flavors as they bake.
Step 5: Bake - Slide the baking sheet into the preheated oven and bake the tilapia for about 12-15 minutes, or until the fish is opaque and flakes easily with a fork. Keep an eye on it to avoid overcooking!
Step 6: Serve - Once baked, remove the tilapia from the oven and, if desired, squeeze fresh lime or lemon juice over the top for a zesty finish. Serve hot with your favorite side dishes, and enjoy your meal!