Step 1

Heat butter and olive oil in a large skillet over medium heat. Add onion, garlic, Cajun seasoning, basil, parsley, and lemon-pepper seasoning. Stir until fragrant, about 30 seconds. Add tilapia fillets and increase heat to medium-high.

Step 2

Cook tilapia until opaque and easily flaked with a fork, 3 to 4 minutes per side. Adjust temperature if it browns too quickly.