Collect 1 cup of unsalted butter (at room temperature), 1 ¾ cups of granulated sugar, 4 large eggs (at room temperature), 2 teaspoons of vanilla extract.
Preheat your oven to 325°F (160°C). Grease and flour a 9x5-inch loaf pan or prepare it with parchment paper.
In a large bowl, cream together the butter and sugar until light and fluffy, using a hand mixer or stand mixer.
Combine the flour, baking powder, and salt. Gradually add to the butter mixture, beating well after each addition.
Pour the batter into the prepared pan and bake for 60-70 minutes, or until a toothpick inserted into the center comes out clean. Allow the cake to cool before slicing and serving.