01 - Preheat oven to 350°F. Grease and flour a 9x5-inch loaf pan or line with parchment paper.
02 - In a medium bowl, whisk together the flour, baking powder, and salt. Set aside.
03 - In a large mixing bowl, beat the softened butter and sugar with an electric mixer on medium speed until pale, light, and fluffy, about 3–4 minutes.
04 - Add the eggs one at a time, beating well after each addition. Stir in the vanilla extract until evenly blended.
05 - With the mixer on low speed, add the dry ingredients in three additions, alternating with the milk in two additions, beginning and ending with the flour mixture. Mix until just combined; avoid overmixing.
06 - Pour the batter into the prepared loaf pan and smooth the top evenly with a spatula.
07 - Bake for 55–65 minutes, or until a toothpick inserted into the center of the cake comes out clean.
08 - Let the cake cool in the pan for 10 minutes, then turn out onto a wire rack to cool completely before slicing.