Here's one of zillions of ways to cook taro leaves:
Harvest the outer leaves; they should still be nice and green.
Taro is an extremely valuable and venerated plant in the pacific, and there's lots of rules around harvesting properly which I won't try to describe. On a practical level, it's important to tear out the central vein so the leaf can be folded up tightly.
Tear a roll of tinfoil into big squares. Each parcel is made by pushing a square of foil gently into a small bowl (breakfast, rather than mixing...)
Lay a couple of leaves in the middle of the foil square at 90 degrees to each other, so that the gaps where the veins were overlap. Does that make sense?
Put some cooked belly pork, sliced onion and salt in the middle and pour in a couple of tablespoons of coconut cream. If it's canned, give it a good shake first!
Fold the leaves over, tuck them in a bit and bundle up the foil to make a sort of foil 'purse'. Try to seal it reasonably well.
Lay them in a roasting dish as you go, then bake them all for at least an hour at about 340 f.
It's important to cook taro leaves really well to break down the oxalic acid crystals, otherwise it's a bit like having a glass pot scrubber wedged in your throat...