Ingredients

The following ingredients have 8 Servings
  • 1 cup unsalted butter (, cubed (226 grams))
  • 9 ounces bittersweet chocolate (, chopped or use chips (255 grams))
  • 1 ½ cup packed light or dark brown sugar ((300 grams))
  • 4 large eggs
  • 2 teaspoons vanilla extract
  • 1 tablespoon instant espresso powder (, optional)
  • ½ teaspoon coarse salt
  • 1 cup all-purpose flour ((120 grams))
  • 1 ½ cup mixed unsalted nuts, such as walnuts, hazelnuts and almonds ((220 grams))
  • Additional salt (, for sprinkling (optional))

Instruction

  • Preheat oven to 350°F. Line a 9-inch square baking pan with parchment paper.
  • In a medium saucepan set over low heat, melt the butter and chocolate, stirring frequently.
  • When melted and smooth, remove from heat and stir in the brown sugar. Add the eggs one at a time, mixing after each.
  • Stir in the vanilla and espresso, if using.
  • Gently stir in the flour and salt, stirring only until streaks of flour are almost gone. Stir in nuts, saving some to sprinkle on top.
  • Pour batter into the prepared baking pan. Top with remaining nuts.
  • Bake until edges are firm and dry, and center is set but not dry, about 35-40 minutes. Sprinkle with additional salt, if desired.
  • Let cool completely before slicing.