"Ladel" isn't actually in the dictionary:

https://www.merriam-webster.com/dictionary/ladel

https://www.dictionary.com/browse/ladel

https://www.collinsdictionary.com/us/spellcheck/english?q=la...

OED has it as an incorrect/unusual variant:

https://www.oed.com/search/dictionary/?scope=Entries&q=ladel

It's misspelled constantly on the internet, but "ladle" is the correct spelling.