Preheat your oven to 350°F (175°C) and prepare a 9-inch round cake pan by greasing it and lining the bottom with parchment paper.

Cream the softened unsalted butter and granulated sugar in a mixing bowl until light and fluffy.

Incorporate the eggs one at a time into the mixture, ensuring each is fully blended before adding the next.

Add the pure vanilla extract and mix until just combined.

Sift together the flour, baking powder, and salt in a separate bowl, then gradually add to the wet mixture, mixing on low speed.

Pour in the whole milk or cream, mixing until the batter is smooth and well-combined.

Transfer the batter into the prepared cake pan and smooth the top.

Bake in the preheated oven for 40–50 minutes until golden brown and a toothpick comes out clean.

Cool the cake in the pan for 10–15 minutes before transferring it to a wire rack to cool completely.

Serve your cake plain or dusted with powdered sugar.