There are two variations - I was experimenting! - and I'm yet to taste/experience test either of them, but surely they can't go far wrong. ;-)
Type 1 is filled with lollies - jet planes, maltesers, pebbles, mini eggs - or whatever you feel like. I sort of did this last year, only went all out and made my own eggs - but it was hugely time consuming. This time around I bought large eggs from the supermarket, as well as a big stash of candy, to take the pain out of it.
To get the lollies inside the egg you'll need a small serrated knife with a sharp tip. I found that gentle pressing would get the knife through the shell (if it doesn't work try a different spot as even the store-bought eggs have thick and thin bits and you might just be trying to cut through a thick part), and then a sawing motion started would work for a little bit. The egg inevitably cracks before you get a nice neat porthole but though the piece that breaks off will be irregular you should still be able to easily glue it back in afterwards.
Then the fun part - stuff in as many lollies (or whatever else you want - who said it had to be food hiding inside?) as you can. To glue the chocolate back on you either need to carefully apply heat to the edges of the lid or melt some extra chocolate separately and apply a small amount to the edges - and then just place it carefully back on the rest of the egg. I used my brulee torch (actually a bit too hot - a hairdryer with something to funnel the heat would do). Easy peasy! If you are careful with the foil when you open it you can rewrap it and fool your recipient into thinking it's a really boring hollow egg - or you could wrap it yourself for added pizazz.
Type 2 is my take on the marshmallow eggs that are prolific at this time of year. I do like them but the chocolate is too thin and isn't really chocolate anyway. Sooo... Same general principle, store-bought eggs, carefully incised, but this time filled with marshmallow and caramel. Once again I went for the completely lazy option, and bought both marshmallows and caramel.
I melted the marshmallows in a saucepan over a low heat (stir often or the bottom will burn!) - a double burner would also be effective and you probably wouldn't have to watch so closely.
To give the eggs a caramelly yolk I initially only piped them about two thirds full of marshmallow, then squirted some caramel in, followed by a little more marshmallow to fill them up. I found that just placing the lids back on these eggs was enough to seal them - the marshmallow holds the broken bit in place well enough.
How do you do Easter eggs? Store-bought, homemade or a mixture?