Preheat the oven to 350°F (175°C)
Grease and flour a cake pan
In a bowl, mix 2 cups all-purpose flour, 1 1/2 cups sugar, 2 teaspoons baking powder, and 1/2 teaspoon salt
In another bowl, whisk 1/2 cup softened butter, 3 eggs, 1 cup milk, and 2 teaspoons vanilla extract
Combine the wet ingredients with the dry ingredients
Mix until smooth and well combined
Pour the batter into the prepared cake pan
Bake for 30 to 35 minutes
Check doneness with a toothpick
Remove from oven and let cool
Frost or serve as desired