boil whole courgettes for 15 mins ish, then slice down the middle and scoop out the guts to make a boat ( mind your fingers tis hot! )
for the filling i finely chop the courgette innards, red onion, add sweetcorn, butternut squash - fry this off in that squirty spray oil thing for about 10 mins on low to soften, add your spices as you please - garlic, pepper, whatever you like. You can add whatever you want though! Maybe a bit of diced chicken too? finely diced.
Crack 2 eggs and throw the yolks ( so tasty but NO ) so you just have the whites
chuck the egg white in with all your chopped up bits, and add to your little courgette canoes
oven bake at 180 for half an hour BOOM this will fill you up a treat and also its fab cold for lunch the next day
same can be achieved with aubergines :-)
Will post pics soon!