Sweet peppers

Red maple

My neighbour very kindly gave me some chilli plants and a sweet pepper plant which I put in my small greenhouse.
Ive had a lovely crop of chillies which ripened beautifully and I'm now drying the excess on strings indoors.
My question is about the sweet peppers. They never grew very big and never ripened so are still quite green. I've picked them, as I know they won't ripen now,  and wonder if these can be dried in the same way as the chillies, i.e. with string around the stem, or would it be better to place them on a dish to dry, or do you think they will dry at all? Would I be better deseeding them, chopping them into small strips and freezing them - though I suspect their high water content would turn them to mush on defrosting? (Or is there another preserving method I could try that someone knows of)?
Sorry for all the questions, but it does seem a shame to waste them - I have about a dozen.
Thanks.

Dovefromabove

I often make up a batch of a ‘Trinity’ of chopped onion, celery and green peppers ... softened in a little oil and frozen in the right quantities to make a casserole or a chilli or similar. 

Red maple

I suspect they could be Palermo peppers rather than bell peppers, in fact they look a bit like fat  green chillies, if you see what I mean. Unfortunately my neighbour didn't tell me what kind they were. I think I'd better do a taste test just to be sure they are sweet peppers! 
I like the idea you suggest, dovefromabove, using the peppers, celery and onion. I think I might go down that route. (Once I've done the taste test).
Thank you to both of you for your replies.

Red maple

Hi Phillipa,
You are probably right. The chillies I have are long and thin, these peppers are quite stubby in comparison.