This was my starting recipe…

https://www.planted365.com/diy-beyond-sausage-vegan-brats/

I like the TVP / rice / oat combination. Using that base I’ve been successful in substituting spicy flavorings for the “brat” spices specified. Apparently vegan/vegetarian casing aren’t available but I’ve found rice wrappers work very well. Contrary to the recipe, try the round shaped ones first. You can tuck the ends in as you roll so it works out a lot neater than the twisted off wrapper ends.