Start by heating your oven to 350°F (175°C). Prepare your cake pan by lightly greasing it with butter or oil, and then sprinkle a little flour over it. Alternatively, you can line the pan with parchment paper to prevent sticking.

In a mixing bowl, sift the cake flour to get rid of any lumps. Add the granulated sugar to the flour, and then stir gently to mix them together evenly.

Now, pour in the milk, the oil, and the vanilla extract into the bowl with the dry ingredients. Use a whisk or an electric mixer on a low setting to combine everything. Mix just until the batter comes together doesn’t over mix it, or the cake might turn out dense.

Pour the batter into the prepared pan, spreading it evenly. Place the pan in the oven and bake for around 18 to 20 minutes. To check if it’s done, insert a toothpick into the center of the cake if it comes out clean, the cake is ready.

Take the cake out of the oven and let it cool in the pan for about 5 to 10 minutes. Then, carefully remove it from the pan and place it on a wire rack to cool completely. Once cooled, slice and enjoy!