Are you looking for a satisfying vegan frozen treat? Look no further. The base of this delicious sherbet is made with oat milk, and it provides a surprisingly smooth texture. The berries are roasted to intensify their flavor and color, and when pureed and added to the oat milk base, it turns the sorbet a stunning color. If you choose to use frozen berries, roast them straight from the freezer, adding an extra 5 to 10 minutes to the cooking time.