"You're gonna need a glass of milk with this one...."
INGREDIENTS
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Cooking spray
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1/2 cup Dutch-processed cocoa powder
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1/4 cup boiling water
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2 ounces unsweetened chocolate, coarsely chopped
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3/4 cup whole milk
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2 cups all-purpose flour
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1 teaspoon baking powder
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1 teaspoon baking soda
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1 teaspoon salt
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2 sticks (8 ounces) unsalted butter, at room temperature
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1 3/4 cups granulated sugar
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4 large egg yolks
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1 tablespoon vanilla extract
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4 large egg whites, at room temperature
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2 cups heavy cream
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1 1/2 pounds (24 ounces) bittersweet chocolate, finely chopped
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2 teaspoons vanilla extract
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4 ounces bittersweet chocolate, finely chopped
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1/4 cup heavy cream
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Chocolate sprinkles or chocolate shavings (optional)