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Preheat your oven to 350°F. Lightly grease and flour an 8-inch round cake pan, or line with parchment paper.

In a large bowl, whisk together the all-purpose flour, granulated sugar, baking powder, baking soda, and salt until well combined.

In a separate medium bowl, whisk together the milk, vegetable oil, vanilla extract, and white vinegar until thoroughly mixed.

Pour the wet ingredients into the dry ingredients. Mix with a whisk or spatula until just combined. Be careful not to overmix; a few small lumps are okay.

Pour the cake batter into the prepared cake pan and spread evenly. Bake for 25 to 30 minutes, or until a wooden skewer inserted into the center comes out clean.

Remove the cake from the oven and let it cool in the pan for 10 minutes. Then, carefully invert the cake onto a wire rack to cool completely before frosting.

While the cake cools, prepare the buttercream frosting. In a medium bowl, using an electric mixer, beat the softened unsalted butter until light and fluffy (about 2 minutes).

Gradually add the powdered sugar to the butter, beating on low speed until combined, then increase to medium speed. Add the milk, vanilla extract, and salt. Beat on medium-high speed until the frosting is smooth, light, and fluffy (about 3-5 minutes). If the frosting is too thick, add a bit more milk, 1 teaspoon at a time. If too thin, add more powdered sugar.

Once the cake is completely cool, spread the vanilla buttercream frosting evenly over the top and sides of the cake. Slice and serve.


Preheat your oven to 350°F. Lightly grease and flour an 8-inch round cake pan, or line with parchment paper.

In a large bowl, whisk together the all-purpose flour, granulated sugar, baking powder, baking soda, and salt until well combined.

In a separate medium bowl, whisk together the milk, vegetable oil, vanilla extract, and white vinegar until thoroughly mixed.

Pour the wet ingredients into the dry ingredients. Mix with a whisk or spatula until just combined. Be careful not to overmix; a few small lumps are okay.

Pour the cake batter into the prepared cake pan and spread evenly. Bake for 25 to 30 minutes, or until a wooden skewer inserted into the center comes out clean.

Remove the cake from the oven and let it cool in the pan for 10 minutes. Then, carefully invert the cake onto a wire rack to cool completely before frosting.

While the cake cools, prepare the buttercream frosting. In a medium bowl, using an electric mixer, beat the softened unsalted butter until light and fluffy (about 2 minutes).

Gradually add the powdered sugar to the butter, beating on low speed until combined, then increase to medium speed. Add the milk, vanilla extract, and salt. Beat on medium-high speed until the frosting is smooth, light, and fluffy (about 3-5 minutes). If the frosting is too thick, add a bit more milk, 1 teaspoon at a time. If too thin, add more powdered sugar.

Once the cake is completely cool, spread the vanilla buttercream frosting evenly over the top and sides of the cake. Slice and serve.
