odt2txt | A simple converter from OpenDocument Text to plain text | Document Editor library

I want to get all .odt files in some folder recursively, extract their text-content and create .txt files from them (named accordingly, so A.odt -> A.txt)

Problem is, I am no good with shell apart from a few tricks.

grep for this is easy: grep -r -i --include \*.odt .

manpage of odt2txt says, I need to specify --output=FILE

So for one file it would be odt2txt A.txt --output=A.txt

This works like a charm. But how to combine those two?

I face two problems here, normally I would chain my commands (again, shell noob) with pipes, like so

grep -r -i --include \*.odt . | odt2txt $INPUT_FROM_GREP --output=$MISSING_NAME

But as you can see, odt2txt wants the file name as first argument, and how to get the name, without the extension to be used by odt2txt?

I feel like I am not on the right track.