Preparation Steps

• Preheat oven to 350°F (175°C). Grease a 9x13 inch baking pan.
• In a medium saucepan, melt the butter over low heat. Remove from heat and stir in brown sugar until combined.
  1 cup unsalted butter, 1.5 cups brown sugar
• Beat in eggs and vanilla extract until smooth.
  2 large eggs, 1 teaspoon vanilla extract
• In a separate bowl, whisk together flour, baking powder, and salt. Gradually add to the butter mixture and stir until just combined.
  2 cups all-purpose flour, 0.5 teaspoon baking powder, 0.25 teaspoon salt
• Fold in white chocolate chips and chopped pistachios.
  1.5 cups white chocolate chips, 0.75 cup pistachios
• Spread the batter evenly in the prepared pan and bake for 25 minutes or until a toothpick inserted in the center comes out clean.
• Allow to cool completely before cutting into squares. Serve and enjoy!