INGREDIENTS
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6 ounces semisweet chocolate, chopped
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3/4 cup all purpose flour
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3/4 cup cake flour
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1/2 teaspoon baking powder
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1/2 teaspoon baking soda
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1/2 teaspoon coarse kosher salt
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1 3/4 cups (packed) dark brown sugar
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6 tablespoons (3/4 stick) unsalted butter, room temperature
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1 teaspoon vanilla extract
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2 large eggs
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3/4 cup buttermilk
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1 teaspoon unflavored gelatin
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1 1/2 cups chilled whipping cream, divided
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1/4 cup powdered sugar
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1/2 teaspoon vanilla extract
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1 cup heavy whipping cream
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2/3 cup light corn syrup
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18 ounces semisweet chocolate, chopped
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Additional powdered sugar