# What You'll Need:
→ Chocolate Mixture
01 - 7 oz high-quality dark chocolate (70% cocoa), chopped
02 - 1/2 cup unsalted butter, cut into pieces
→ Wet Ingredients
03 - 1 cup granulated sugar
04 - 1/4 cup packed light brown sugar
05 - 3 large eggs, room temperature
06 - 1 tsp pure vanilla extract
→ Dry Ingredients
07 - 3/4 cup all-purpose flour
08 - 1/3 cup unsweetened cocoa powder
09 - 1/2 tsp fine sea salt
→ Topping
10 - 1/2 tsp flaky sea salt
# Directions:
01 - Preheat oven to 350°F. Line an 8-inch square baking pan with parchment paper, leaving an overhang for easy removal.
02 - Combine dark chocolate and butter in a heatproof bowl over simmering water, stirring until smooth; remove from heat and allow to cool slightly.
03 - Whisk granulated sugar, brown sugar, eggs, and vanilla extract in a large bowl until pale and thick, about 2 to 3 minutes.
04 - Pour melted chocolate mixture into the egg mixture, whisking until fully combined.
05 - Sift flour, cocoa powder, and fine sea salt into the wet mixture. Fold gently with a rubber spatula until just combined.
06 - Pour batter into the prepared pan and smooth the top. Sprinkle with flaky sea salt evenly.
07 - Bake for 28 to 32 minutes, until a toothpick inserted near the center comes out with a few moist crumbs.
08 - Allow to cool completely on a wire rack before lifting out using parchment overhang. Cut into 16 squares.