Only vegan recipes substituting grapes I found are at https://www.gourmetsleuth.com/ingredients/detail/grapes, but I cant' access the webpage without solving a captcha because I use Tor, and I refuse using captchas. Hope the link would be useful.
Searched for "vegan recipes with grapes" in DDG and here are some results:
http://thegreekvegan.com/?s=grape&submit=Search
https://simple-veganista.com/tag/grapes/
https://delishably.com/fruits/Frozen-Grapes-for-Delicious-Vegan-Recipes
https://emilyhappyhealthy.com/vegan-grape-salad/
https://veganheaven.org/all-recipes/frozen-grapes-the-best-snack-ever/
https://www.onegreenplanet.org/vegan-recipe/fresh-red-grape-cake/
https://www.onegreenplanet.org/vegan-recipe/apple-and-grape-pasta-salad/
https://www.plantbasedrecipe.com/articles/chia-seed-grape-jam-raw-vegan-low-sugar/
https://recipes.sparkpeople.com/recipe-detail.asp?recipe=357856