Here's another way of doing them:- Peel them, trim off the tops and tails, then cut them in half lengthways and then cut out the woody heart (a v-notch shape should work). Then place them (raw) in hot olive oil, spoon hot oil over the tops and roast in the oven until golden brown (about 25-30 minutes). The removal of the bitter woody heart means they are a lot sweeter and quicker to cook so I don't need to parboil first or add honey. I only learnt this tip a few months ago and didn't believe it would work - until I tried it, lol