1. Preheat your oven to 350°F (175°C) and grease a 9×13 inch baking pan.
2. In a large bowl, cream together the softened butter and sugar until light and fluffy.
3. Add the eggs one at a time, mixing well after each addition, then stir in the vanilla extract.
4. In another bowl, whisk together the flour, baking powder, and salt.
5. Gradually add the dry ingredients to the butter mixture, alternating with the sour cream, starting and ending with the flour mixture.
6. Pour the batter into the prepared baking pan and smooth the top.
7. Bake for 30-35 minutes or until a toothpick inserted into the center comes out clean.
8. Let the cake cool in the pan for 10 minutes before transferring to a wire rack to cool completely.

Discover my favorite kitchen tools I always use.