Can I use a whole uncut green pepper that I accidentally froze or is it garbage? I accidentally froze a whole uncut green pepper. I haven't tried anything with it except take it out of freezer. Is this still usable or is it now garbage?
It is certainly still safe to use.

Freezing vegetables will cause the the texture to soften, so it wouldn't provide a very enjoyable crunch, depending on how you plan on using it.

It would be well suited for use in something like a pasta sauce, stew or chili.