Pat the mahi mahi dry and coat on both sides with the spice rub.
Heat a fry pan over medium heat and add the fish to the pan
Cook on each side for three minutes and then remove the pan to the hot oven and immediately turn off the heat.
After 10 minutes remove the fish and it should be cooked unless you have an especially thick fillet.
Remove the pan and serve the fillet with the pumpkin polenta and a side vegetable of choice.