I made these ages ago. They worked quite well.
I just had another go at them, they were delicious and very easy to eat.
I imagine that, with some dressing (like replacing the lids) they could be used as a (relatively) fancy starter.
On the other hand, you can eat them like a (rather messy) apple once they've cooled down a bit:
800g Beef mince
1. Cut the centre out of the peppers.
2. Mix the beef mince with as much chilli powder as you want.
3. Stuff the peppers with the mince.
4. Roast the peppers at 200 degrees C for 30 minutes.
Volumise: Add shredded spinach to the beef mince.
Add fat: Use fattier mince.