Ingredients

• 1 ¹/₄ cups unsalted butter
  
• ¹/₄ cup granulated sugar
  
• ¹/₂ cup demerara sugar (or light brown sugar)
  
• 1 ³/₄ cups dark brown sugar
  
• 2 large eggs
  
• 2 ¹/₄ teaspoons vanilla extract
  
• 1 ³/₄ cups all-purpose flour
  
• 1 cup
  2 tbsp. bread flour
  
  
  
• ¹/₂ teaspoon baking soda
  
• ³/₄ teaspoon baking powder
  
• 1 ¹/₂ teaspoons vanilla salt, or kosher salt