I've been using
https://otter.ai/ on the iPhone (An android app also exists) to do this. It is tremendously helpful for getting a first draft out despite writing anxiety.
It lets you speak uninterrupted for as long as you want and doesn't require you to restart. The text which it produces is quite high quality -- not stenographer-level quality; you still need a trained human for that. -- but if you're in a quiet area, it is certainly good enough to transcribe then go through an hour later and correct the errors.
It can export directly to Bear, email, or notes. I assume Evernote works too.