Preheat your oven to 350°F (175°C).
Grease and line a 9-inch round cake pan with parchment paper.
In a large bowl, whisk together the flour, granulated sugar, baking powder, baking soda, and salt.
In another bowl, mix the plant-based milk, vegetable oil, dairy-free yogurt, vanilla extract, and apple cider vinegar until smooth.
Add the wet ingredients to the dry ingredients, mixing until just combined. Do not overmix.
Pour the batter into the prepared cake pan and spread it evenly.
Bake for 30-35 minutes, or until a toothpick inserted into the center comes out clean.
Allow the cake to cool in the pan for 10 minutes, then transfer to a wire rack to cool completely.