Preheat your oven to 400°F (200°C). Line a baking sheet with parchment paper.
Pat salmon fillets dry with paper towels. Place them skin-side down on the prepared baking sheet.
In a small bowl, whisk together melted butter, honey, olive oil, and Cajun seasoning until smooth.
Brush the mixture generously over the salmon fillets, making sure to coat the tops evenly.
Bake for 12-15 minutes, depending on thickness, until salmon flakes easily with a fork.
Serve with fresh parsley, lemon wedges, and any extra honey butter from the pan.