Preheat the oven to 350°F (175°C).

Grease two 9-inch round cake pans with butter or cooking spray, then dust with flour.

In a mixing bowl, whisk together the flour, baking powder, and salt.

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

Add the eggs one at a time, mixing well after each addition, followed by the vanilla extract.

Gradually add the dry ingredients to the butter mixture, alternating with the milk, until just combined.

Divide the batter evenly between the prepared cake pans.

Bake in the preheated oven for 25 to 30 minutes, or until a toothpick inserted into the center comes out clean.

Let the cakes cool in the pans for about 10 minutes before transferring them to a cooling rack.