Ingredients:

  • 1 cup (2 sticks, 226g) unsalted butter, softened
  • ¾ cup (150g) granulated sugar
  • ¾ cup (165g) packed light brown sugar
  • 2 large eggs
  • 2 teaspoons (10ml) pure vanilla extract
  • 2 ¼ cups (281g) all-purpose flour
  • 1 teaspoon (5ml) baking soda
  • 1 teaspoon (5ml) salt
  • 2 cups (340g) semi-sweet chocolate chips
  • 2 tbsp (30 ml) Unsalted butter, melted
  • 2 tbsp (30 g) Brown Sugar, packed
  • 1/2 cup (85 g) semi-sweet chocolate chips, melted
  • Flaky sea salt (like Maldon, optional)
  • Extra chocolate chips (optional)

Instructions:

  1. Preheat oven to 350°F (175°C). Grease and flour a 9-inch cake pan (or line with parchment paper).
  2. In a large bowl, cream together the softened butter, granulated sugar, and brown sugar until light and fluffy.
  3. Beat in the eggs one at a time, then stir in the vanilla extract.
  4. In a separate bowl, whisk together the flour, baking soda, and salt.
  5. Gradually add the dry ingredients to the wet ingredients, mixing until just combined. Be careful not to overmix!
  6. Fold in the chocolate chips.
  7. In seperate bowls, melt chocolate and mix the melted butter and brown sugar in a small bowl.
  8. Spread most of the cookie dough evenly into the prepared cake pan. Drizzle with the chocolate swirl mixture. Use a knife or skewer to swirl in gently. Dollop the remaining cookie dough over the swirl. Spread to cover and sprinkle more chocolate chips on the top. Bake for 25-30 minutes, or until golden brown and a toothpick inserted into the center comes out with moist crumbs.
  9. Let the cookie cake cool in the pan for 10 minutes before transferring it to a wire rack to cool completely. Slice and serve.