This recipe makes one 8-inch round cake. You can double or even triple it very easily for larger projects, and it adapts well to cupcakes also!
Preheat your oven to 350 degrees, and grease an 8-inch round or square cake pan. Set aside.
In a large bowl, beat together the butter and sugar until fluffy. Beat in the vanilla, eggs, and sour cream until combined- the mixture will be lumpy. Then, add in the flour, baking powder, and salt, and beat until combined. Add in the milk, and beat for an additional 1-2 minutes, or until the mixture is very smooth.
The batter will be thick. Pour into your prepared pan, and spread it evenly. Bake for 25-28 minutes, or until a toothpick comes out clean. Cool completely, and top or use as desired!