kue mentega susu

Bahan-bahan (10 porsi)

• ⅓ cup unsalted butter (room temperature)
• ¾ cup light brown sugar (packed)
• ¼ cup granulated sugar
• 1 large egg (room temperature)
• 1 ½ teaspoon vanilla extract
• 1 cup buttermilk (room temperature)
• 1 ½ cups all-purpose flour
• 1 teaspoon baking soda
• ¾ teaspoon salt
• ¼ cup unsalted butter
• 2 tablespoons dark brown sugar (packed)
• ½ teaspoon vanilla extract
• 2 tablespoons buttermilk
• 1 ⅓ cups powdered sugar
• 1 pinch salt