Step 1: Preheat your oven to 350°F (175°C) and grease a 9×5-inch loaf pan or line it with parchment paper for easy removal.
Step 2: In a large mixing bowl, cream together the softened butter and granulated sugar until light and fluffy. This should take about 3-5 minutes.
Step 3: Add the eggs one at a time, beating well after each addition. Stir in the vanilla extract until combined.
Step 4: In a separate bowl, whisk together the all-purpose flour, baking powder, and salt.
Step 5: Gradually add the dry ingredients to the wet mixture, alternating with the milk. Begin and end with the dry ingredients. Mix until just combined.
Step 6: Gently fold in the melted white chocolate until fully incorporated into the batter.
Step 7: Pour the batter into the prepared loaf pan, smoothing the top with a spatula.
Step 8: Place the pan in the preheated oven and bake for 50-60 minutes, or until a toothpick inserted into the center comes out clean.
Step 9: Once baked, remove the pound cake from the oven and allow it to cool in the pan for about 10 minutes. Then, transfer it to a wire rack to cool completely before slicing.