If you have oil you can use it to cook just about anything.
Mogie has an thread for extracting thc from weed and infusing it into oil.
http://www.greenpassion.org/f35/storable-cannabis-cooking-oil-41/
For vegan I would say a vegan pizza.
You could just about pour the oil over the pizza and then cook it.
Just use the oil instead of olive oil.