01 - Set the oven to 400°F and line a baking tray with parchment paper or lightly grease it.
02 - Pat the salmon fillets dry with paper towels and place them skin-side down on the prepared tray.
03 - Combine olive oil, Cajun seasoning, salt, and black pepper in a small bowl. Evenly brush or rub onto the salmon fillets.
04 - Squeeze the juice of one lime evenly over the seasoned salmon.
05 - Bake for 12 to 15 minutes until the salmon flakes easily with a fork and is opaque in the center.
06 - Top with lime slices and chopped cilantro or parsley before serving.