I use this Ella one
https://www.waitrose.com/ecom/produc...-116903-116904
I think there are a couple others in the range that are 100% veg as well.
It's great because you can freeze it down into small portions if need be.
You could also check out sainsbury's little ones, there is a green one that is 100% veg, maybe got kale, peas, broccoli in it - can't quite remember. Goodluck.