Step #1 In a saucepot over med-heat/flame, add the butter, red onion, shallots & garlic.
Step #2 Cook for 3 mins until the onions are soft, but not brown.
Step #3 Add the grilled pineapple, honey, dark rum, pineapple juice & green onions.
Step #4 Bring to a boil, remove this from heat & set aside.
Step #5 Spice up to taste with salt & pepper.
Step #6 Preheat grill to medium high.
Step #7 Place the Mahi-mahi on a flat surface & rub with seasoning, pressing the spice carefully into the meat.
Step #8 Brush lightly with olive oil.
Step #9 Grill for three to four mins per side, glazing liberally with pineapple glazing syrup until the fish is just cooked through, tender & flakes lightly.
Enjoy the Grilled Mahi-Mahi With Pineapple Rum Glaze recipe