Best Fudgy Brown Butter Brownies with Crackly Tops

Instructions:

1. Preheat oven to 350°F (175°C). Line an 8x8 inch metal baking pan with parchment paper, ensuring an overhang on two sides to create 'slings' for easy removal. Lightly grease any exposed sides of the pan.
2. Brown the Butter: Melt the butter in a light-coloured, heavy-bottomed saucepan over medium heat. Continue cooking, swirling frequently, until the milk solids turn deep golden brown and the butter smells distinctly nutty. Immediately pour the brown butter (including the browned solids) into a large, heatproof mixing bowl.
3. Melt the Chocolate: Add the chopped bittersweet chocolate to the hot brown butter. Let it stand undisturbed for 2 minutes, then whisk until the mixture is completely smooth and glossy.
4. Incorporate Sugars: Whisk in the granulated sugar and brown sugar until fully combined into the chocolate mixture.
5. Add Eggs & Vanilla: Whisk in the eggs one at a time, ensuring each is fully incorporated before adding the next. Whisk vigorously for about 60 seconds after the last egg to begin creating the shiny crust. Whisk in the vanilla extract.
6. Combine Dry Ingredients: In a separate small bowl, whisk together the sifted flour, cocoa powder, and salt.
7. Fold in Dry Ingredients: Gently fold the dry ingredients into the wet mixture using a rubber spatula until just combined. Avoid overmixing; a few streaks of flour are acceptable.
8. Fold in Extras (Optional): If using chocolate chips or nuts, gently fold them into the batter now.
9. Bake: Scrape the batter into the prepared pan and spread evenly. Bake for 30–35 minutes. The edges should look set, and a toothpick inserted near the centre should come out with moist, fudgy crumbs attached (not wet batter).
10. Cool Completely: Allow the brownies to cool fully in the pan on a wire rack (at least 2 hours, or chilled) before lifting out via the parchment slings and slicing into clean squares.