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

In a large mixing bowl, beat the softened unsalted butter and granulated sugar together until light and fluffy, about 3-5 minutes.

Add the large eggs one at a time while mixing well after each addition. Stir in the vanilla extract.

In another bowl, whisk together the all-purpose flour, baking powder, and salt. Gradually incorporate the dry mix into the wet ingredients on low speed until just combined.

Pour the cake batter into the prepared cake pan and smooth the surface with a spatula.

Bake in the preheated oven for 30-35 minutes, or until a toothpick inserted in the center comes out clean. Let cool in the pan for 10 minutes before transferring to a wire rack.