Preheat the oven to 350°F (175°C).

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

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

Add the eggs one at a time, mixing well after each addition.

Stir in the vanilla extract and milk until well combined.

Gradually add the dry ingredients to the wet ingredients, mixing until just combined.

Pour the batter into a greased cake pan.

Bake for 25-30 minutes or until a toothpick inserted in the center comes out clean.

Let the cake cool before serving.