Ingredients:

  • 1 cup (2 sticks) Unsalted Butter, cut into cubes
  • 8 ounces High-Quality Dark Chocolate, chopped (60% to 70% cocoa solids)
  • 1 1/2 cups Granulated Sugar
  • 1/2 cup Light Brown Sugar, packed
  • 3 Large Eggs, room temperature
  • 1 teaspoon Vanilla Extract
  • 3/4 cup All-Purpose Flour, scooped and leveled
  • 1/4 cup Dutch Process Cocoa Powder, sifted
  • 1/2 teaspoon Fine Sea Salt
  • 1 cup Chopped Walnuts or Pecans (Optional Mix-Ins)

Instructions:

  1. Preheat the oven to 350°F (175°C). Line an 8x8 inch baking pan with parchment paper, allowing the paper to overhang on two sides for easy removal later.
  2. Melt Butter and Chocolate: Combine the chopped butter and chopped dark chocolate in a large heatproof bowl. Melt over a simmering pot of water (a double boiler) or in 30-second bursts in the microwave until just melted and smooth. Remove from heat.
  3. Dissolve the Sugar (The Crinkle Secret): Add both the granulated sugar and brown sugar to the warm chocolate mixture. Whisk vigorously for about 60–90 seconds until the mixture looks glossy, slightly grainy, and slightly cooler to the touch. This crucial step partially dissolves the sugar, guaranteeing the signature crinkle top.
  4. Incorporate Eggs: Add the room-temperature eggs, one at a time, whisking well for about 30 seconds after each addition until the batter is thick, shiny, and emulsified. Stir in the vanilla extract.
  5. Combine Dry Ingredients: In a separate medium bowl, whisk together the flour, sifted cocoa powder, and sea salt.
  6. Fold in Dry Ingredients: Gently fold the dry mixture into the wet ingredients using a rubber spatula. Mix only until no streaks of flour remain. Do not overmix.
  7. Add Mix-Ins (Optional): If using, gently fold in the nuts or chocolate chips, then scrape the batter into the prepared pan and spread evenly.
  8. Bake for 30–35 minutes. The edges should look set, and the centre should still have moist, sticky crumbs clinging to a toothpick (not wet batter). This ensures a fudgy centre.
  9. Cool Completely: Remove the pan from the oven and let the brownies cool completely in the pan on a wire rack for at least 2 hours before slicing into 16 squares. Cooling is essential for achieving the dense, fudgy texture.