Ultra fudgy brownies made with nutty, caramelized brown butter for rich depth and an indulgent chocolate flavor. Crisp edges, gooey center, and a glossy top make these brownies truly next level.
¾ cup (1½ sticks) unsalted butter
1 cup granulated sugar
¼ cup brown sugar (optional)
2 large eggs + 1 egg yolk
1 tsp vanilla extract
½ cup cocoa powder (Dutch-process or natural)
½ cup all-purpose flour
½ tsp salt
½ tsp espresso powder (optional)
½–¾ cup chocolate chips or chopped chocolate
Flaky sea salt (optional, for topping)
Preheat oven to 325°F (163°C). Line an 8×8-inch pan with parchment paper.
Brown the butter in a saucepan over medium heat until golden and fragrant. Let cool slightly.
In a bowl, whisk sugar, brown sugar, eggs, and yolk for 2–3 minutes until light and thick.
Slowly whisk in the brown butter and vanilla.
Sift in cocoa powder, flour, salt, and espresso powder. Fold until just combined.
Stir in chocolate chips or chunks.
Pour into prepared pan, top with flaky sea salt, and bake for 28–34 minutes.
Cool before slicing. Chill for extra clean cuts.
Brown butter must cool slightly before adding to eggs. For neater squares, refrigerate before cutting. Freeze extras for future cravings.