Ingredients

The following ingredients have 4 Servings
  • ¾ cup unsalted butter (melted and cooled at least 10-15 minutes (see note) (170g))
  • ⅔ cup tightly packed brown sugar (light or dark (135g))
  • ¼ cup white sugar ((50g))
  • 1 egg + 1 egg yolk (room temperature preferred)
  • 1 teaspoon vanilla extract
  • 2 cups all-purpose flour ((250g))
  • 1 teaspoon cornstarch
  • ¼ teaspoon baking powder
  • ¾ teaspoon salt
  • 1 cup semisweet chocolate chips ((170g))
  • ¾ cup unsalted butter (cut into Tbsp-sized pieces (170g))
  • ½ cup semisweet chocolate chips ((90g))
  • ½ cup natural cocoa powder ((50g))
  • ½ cup sugar ((100g))
  • 1 cup light brown sugar (firmly packed (200g))
  • 2 large eggs + 1 egg yolk (room temperature preferred)
  • 1 teaspoon vanilla extract
  • ½ teaspoon salt
  • 1 cup all-purpose flour ((125g))
  • ½ cup mini chocolate chips (optional (150g))

Instruction

  • Preheat oven to 350F (175C) and lightly grease and flour sides and bottom of a 13x9 baking dish (or spray with baking spray). Set aside.