INGREDIENTS
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To prep the pan:
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1 tbsp. Dutch-processed cocoa powder
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1 tbsp. unsalted butter, melted
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For the cake:
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½ cup boiling water
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2 oz. bittersweet chocolate, chopped
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2 cups (10 oz.) all-purpose flour
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¾ cup (2¼ oz.) Dutch-processed cocoa powder
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2 cups (8 oz.) confectioners’ sugar
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1 tsp. salt
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5 large eggs, at room temperature
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1 tbsp. vanilla extract
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1 cup (7 oz.) granulated sugar
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¾ cup packed (5¼ oz.) light brown sugar
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20 tbsp. (2½ sticks) unsalted butter, at room temperature
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For the glaze:
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¾ cup heavy cream
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¼ cup light corn syrup
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8 oz. bittersweet chocolate, finely chopped
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½ tsp. vanilla extract