To make a delicious cake, first preheat the oven to 350 degrees Fahrenheit. In a large mixing bowl, cream together the butter and sugar until light and fluffy. Add in the eggs one at a time, beating well after each addition. Mix in the vanilla extract. In a separate bowl, combine the flour, baking powder, and salt. Gradually add the dry ingredients to the wet ingredients, mixing until well combined. Pour the batter into a greased cake pan and bake for 30-35 minutes, or until a toothpick inserted into the center comes out clean. Allow the cake to cool before frosting and serving. Enjoy!