The Ultimate Fudgy Brownies with a Perfect Crackle Top

Instructions:

1. Preheat oven to 350°F (175°C). Line an 8x8 inch square baking pan with parchment paper, leaving an overhang on two sides.
2. Gently melt the butter and chopped bittersweet chocolate together in a medium saucepan over low heat until smooth. Remove from heat.
3. Whisk the granulated sugar and brown sugar into the warm chocolate mixture until fully incorporated. Let this mixture sit undisturbed for 5 minutes.
4. Whisk in the eggs, one at a time, ensuring full incorporation after each addition. Whisk vigorously for 60 seconds after the last egg to begin dissolving the sugar granules. Stir in vanilla extract.
5. Gently sift the flour, cocoa powder, and salt over the wet mixture. Use a rubber spatula to just combine until no dry streaks of flour remain. Do not overmix.
6. Fold in any optional chocolate chips or nuts gently using the spatula.
7. Pour the batter into the prepared pan and spread evenly. Bake for 30–35 minutes. The toothpick should come out with moist, fudgy crumbs attached, not wet batter.
8. Allow the brownies to cool completely in the pan on a wire rack for a minimum of 2 hours. This cooling process is critical for achieving a dense texture and clean slices.
9. Use the parchment sling to lift the slab from the pan, then slice into 16 squares.