Step-by-Step Instructions:
Preheat the oven to 350°F (175°C) and grease a 9-inch round cake pan.
- Cream together butter and sugar until light and fluffy.
- Add eggs one at a time, beating well after each addition.
- In a separate bowl, mix flour, baking powder, and salt.
- Gradually add the dry ingredients to the wet, alternating with buttermilk, starting and ending with the dry ingredients.
- Stir in vanilla extract.
- Pour the batter into the prepared pan and smooth the top.
- Bake for 25-30 minutes or until a toothpick inserted in the center comes out clean.
- Cool in the pan, then transfer to a serving plate.
- Dust with powdered sugar and serve with fresh berries or whipped cream.