Preheat your oven to 350°F (175°C).

Grease your 9-inch round cake pan with butter or cooking spray.

In a mixing bowl, combine the all-purpose flour, baking powder, and salt. Whisk together.

In another bowl, beat the softened butter and granulated sugar until light and fluffy.

Mix in the eggs one at a time, followed by the vanilla extract.

Gradually add the dry mixture to the butter mixture, alternating with the milk.

Pour the batter into the prepared cake pan and smooth the top.

Bake for 30 minutes or until a toothpick comes out clean.

Allow the cake to cool in the pan for 10 minutes before transferring it to a cooling rack.