Preheat your oven to 425°F (220°C). Line a baking sheet with parchment paper.
In a mixing bowl, whisk together the flour, sugar, baking powder, and salt.
Add the cold, cubed vegan butter to the dry ingredients. Use a pastry cutter or your fingers to cut the butter into the flour mixture until it resembles coarse crumbs.
Pour in the non-dairy milk and vanilla extract. Stir until just combined. Do not overmix.
Drop spoonfuls of the dough onto the prepared baking sheet, spacing them about 2 inches apart.
Bake for 15-20 minutes, or until the shortcakes are golden brown on top.
Let cool slightly before serving. Enjoy with fresh berries and vegan whipped cream if desired.