At a glance
You're getting a dense, fudgy chocolate brownie that stays perfectly moist thanks to invert sugar, topped with a delicate crackly crust and a peanut butter-white chocolate glaze. The recipe requires careful folding to preserve airiness (which creates that signature crust), then a quick bake where underbaking is actually the goal—finish with a drizzle of glaze, chocolate crispies, and flaky sea salt to balance all that sweetness.
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Melt the chocolate
Set up a double boiler and gently melt the dark chocolate together with the butter. Once the mixture is smooth and fully combined, take it off the heat and let it cool slightly so it's no longer hot.
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Whip the egg mixture for the crust
In a large bowl, whisk the eggs with the granulated sugar, brown sugar, invert sugar and vanilla. Beat thoroughly for several minutes until the mixture turns pale and fluffy – this is what creates that famous thin, crackly crust on top.
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Combine the wet ingredients
Very gently and slowly fold the cooled chocolate mixture into the airy egg foam. Work carefully and take your time so you don't knock too much air out of the eggs.