Baked Mahi Mahi You will need: 2 lbs Mahi Mahi filets 3 shots of rum (light or dark) Juice from two limes 1 lemon sliced and pitted 1 tablespoon of old bay seasoning 2 tablespoons of oregano 4 tablespoons of unsalted butter 2 sliced onions Preparation: Marinate fish filets with seasonings, rum, lime juice, etc.