# Ingredient List:
→ Dry Ingredients
01 - 1 cup all-purpose flour (125 g)
02 - ¾ cup unsweetened cocoa powder (65 g)
03 - ½ teaspoon baking powder
04 - ½ teaspoon sea salt
→ Wet Ingredients
05 - 1 cup unsalted butter, melted and slightly cooled (225 g)
06 - 1½ cups granulated sugar (300 g)
07 - ½ cup packed light brown sugar (100 g)
08 - 3 large eggs
09 - 2 teaspoons pure vanilla extract
→ Chocolate
10 - 1 cup dark chocolate chunks (at least 60% cocoa) (175 g)
11 - ½ cup milk chocolate chunks (90 g)
# Steps:
01 - Preheat the oven to 350°F. Line a 9x9-inch baking pan with parchment paper, leaving an overhang for easy removal.
02 - Sift together flour, cocoa powder, baking powder, and sea salt in a medium bowl; set aside.
03 - Whisk melted butter, granulated sugar, and brown sugar in a large bowl until smooth and glossy.
04 - Add eggs one at a time, whisking thoroughly after each addition. Stir in vanilla extract.
05 - Gently fold dry ingredients into wet mixture until just combined; avoid overmixing to maintain fudginess.
06 - Fold in dark and milk chocolate chunks, reserving a small portion for topping.
07 - Pour batter into prepared pan, smooth the surface, then evenly sprinkle reserved chocolate chunks on top.
08 - Bake for 28 to 32 minutes until a toothpick inserted in the center comes out with moist crumbs but no wet batter.
09 - Allow to cool completely in the pan on a wire rack, then lift out using parchment overhang, cut into squares, and serve.