Ingredients:

  • 1 cup (225g) unsalted butter, browned and slightly cooled
  • 3/4 cup (150g) packed light brown sugar
  • 1/2 cup (100g) granulated white sugar
  • 1 large (50g) egg, room temperature
  • 2 tsp (10ml) vanilla extract
  • 2 cups (250g) all-purpose flour
  • 1 tsp (5g) baking soda
  • 1/2 tsp (3g) salt
  • 1 cup (170g) semi-sweet chocolate chips
  • 1 cup (170g) white chocolate chips
  • 1/2 cup (60g) festive sprinkles

Instructions:

  1. Prep the pan. Line your 9x9 inch pan with parchment paper, leaving an overhang on two sides.
  2. Brown the butter. Melt the butter in a saucepan over medium heat. Stir constantly until it foams and you see little brown bits forming at the bottom. Remove from heat immediately and let it cool slightly.
  3. Mix sugars. Whisk the browned butter, light brown sugar, and white sugar together. Note: Ensure the mixture is smooth and no large sugar lumps remain.
  4. Add liquids. Stir in the room temperature egg and vanilla extract. Mix until the batter looks glossy and well combined.
  5. Incorporate dry ingredients. Fold in the flour, baking soda, and salt using a spatula. Note: Stop the moment you see no more flour streaks; overmixing leads to tough bars.
  6. Fold in cheer. Gently stir in the semi sweet chocolate chips, white chocolate chips, and festive sprinkles.
  7. Fill the pan. Spread the batter evenly into the pan. Press down firmly to remove any large air pockets.
  8. Bake. Bake for 25 minutes until edges are deep golden brown and the center is set but still soft.
  9. Finish with salt. Immediately sprinkle the flaky sea salt over the top while the bars are still hot.
  10. The hard part. Allow the bars to cool completely in the pan for at least 1 hour.