"Chocolate Blackout Cupcakes feature a dark chocolate cupcake filled with chocolate ganache and topped with a rich dark chocolate buttercream. For serious chocolate lovers only!!..."
INGREDIENTS
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For the ganache filling
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2 ounces (57 grams) semisweet chocolate
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1/4 cup heavy cream
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For the cupcakes
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4 ounces (113 grams) bittersweet chocolate, finely chopped1/3 cup (28 grams) dark cocoa powder
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1/2 cup boiling water
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3/4 cup (95 grams) all-purpose flour1/2 cup (100 grams) granulated sugar
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1/4 cup (50 grams) packed light brown sugar1/2 teaspoon salt1/2 teaspoon baking soda1/2 cup (113 grams) sour cream or plain yogurt, at room temperature 1/4 cup vegetable oil2 large eggs plus one egg yolk, at room temperature 2 teaspoons white vinegar
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For the frosting
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8 ounces (227 grams) bittersweet chocolate, melted and cooled
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3 cups (375 grams) powdered sugar, sifted
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1/4 cup (21 grams) dark cocoa powder, sifted
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8 ounces (227 grams) unsalted butter, at room temperature
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1/4 teaspoon fine salt
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2 teaspoons pure vanilla extract
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2 tablespoons heavy cream