These days any mainstream recipe site will have plenty of vegetarian options.
I'm not veggie, but I like to seek out cuisines that have great options: Indian, Ethiopian, and Medditeranean/Middle Eastern are good for me. Packed with flavor so you don't feel like meat is missing.
This site, while not 100% vegetarian, has a lot of great ones, and he has a vegetarian book too!
https://ottolenghi.co.uk/recipes