Preheat your oven to 350 degrees and line your muffin pan with paper liners. Place 1-2 vanilla wafers in the bottom of each cup.
Whisk together the flour, baking powder, and salt in a medium bowl. Set aside.
Combine the butter and sugar in the bowl of an electric mixer and whisk until light and fluffy. Add the eggs and vanilla paste. Fold in the dry ingredients and buttermilk.
Fill each cup in your prepared pan 3/4 full and bake 18 minutes or until a toothpick comes out clean. Cool completely.