Kue Vanilla Pound Terbaik

Bahan-bahan (8 porsi)

• 1 cup unsalted butter (softened)
• 1 1/2 cup gula pasir
• 4 whole telur
• 1 egg yolk
• 2 teaspoon ekstrak vanila
• ½ teaspoon garam
• 1 ¾ cup all-purpose flour
• 1 teaspoon baking powder