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Dark Chocolate Cupcakes

By America's Test Kitchen

Published on September 14, 2011

Time

1 hour, plus 30 minutes cooling

Yield

Makes 12 cupcakes

Dark Chocolate Cupcakes

Ingredients

8 tablespoons unsalted butter, cut into 4 pieces2 ounces (57 grams) bittersweet chocolate, chopped½ cup Dutch-processed cocoa (1 ½ ounces/43 grams)¾ cup unbleached all-purpose flour (3 ¾ ounces/106 grams)½ teaspoon baking soda ¾ teaspoon baking powder 2 large eggs ¾ cup sugar (5 ¼ ounces/149 grams)1 teaspoon vanilla extract ½ cup sour cream (4 ounces/113 grams)½ teaspoon table salt

Before You Begin

This recipe does not double very well. Cupcakes made from a doubled batch and baked side by side in the oven yield a slightly compromised rise. It's best to make two separate batches and bake each separately. Store leftover cupcakes (frosted or unfrosted) in the refrigerator, but let them come to room temperature before serving.

Instructions

  1. Adjust oven rack to lower-middle position; heat oven to 350 degrees. Line standard-sized muffin pan (cups have 1/2-cup capacity) with baking-cup liners.
  2. Combine butter, chocolate, and cocoa in medium heatproof bowl. Set bowl over saucepan containing barely simmering water; heat mixture until butter and chocolate are melted and whisk until smooth and combined. Set aside to cool until just warm to the touch.
  3. Whisk flour, baking soda, and baking powder in small bowl to combine.
  4. Whisk eggs in second medium bowl to combine; add sugar, vanilla, and salt and whisk until fully incorporated. Add cooled chocolate mixture and whisk until combined. Sift about one-third of flour mixture over chocolate mixture and whisk until combined; whisk in sour cream until combined, then sift remaining flour mixture over and whisk until batter is homogenous and thick.
  5. Divide batter evenly among muffin pan cups. Bake until skewer inserted into center of cupcakes comes out clean, 18 to 20 minutes.
  6. Cool cupcakes in muffin pan on wire rack until cool enough to handle, about 15 minutes. Carefully lift each cupcake from muffin pan and set on wire rack. Cool to room temperature before icing, about 30 minutes. (To frost: Mound about 2 tablespoons icing on center of each cupcake. Using small icing spatula or butter knife, spread icing to edge of cupcake, leaving slight mound in center.)

Dark Chocolate Cupcakes

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By America's Test Kitchen
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Time

1 hour, plus 30 minutes cooling

Yield

Makes 12 cupcakes

Ingredients

8 tablespoons unsalted butter, cut into 4 pieces
2 ounces (57 grams) bittersweet chocolate, chopped
½ cup Dutch-processed cocoa (1 ½ ounces/43 grams)
¾ cup unbleached all-purpose flour (3 ¾ ounces/106 grams)
½ teaspoon baking soda
¾ teaspoon baking powder
2 large eggs
¾ cup sugar (5 ¼ ounces/149 grams)
1 teaspoon vanilla extract
½ cup sour cream (4 ounces/113 grams)
½ teaspoon table salt

Test Kitchen Techniques

Ingredients

8 tablespoons unsalted butter, cut into 4 pieces
2 ounces (57 grams) bittersweet chocolate, chopped
½ cup Dutch-processed cocoa (1 ½ ounces/43 grams)
¾ cup unbleached all-purpose flour (3 ¾ ounces/106 grams)
½ teaspoon baking soda
¾ teaspoon baking powder
2 large eggs
¾ cup sugar (5 ¼ ounces/149 grams)
1 teaspoon vanilla extract
½ cup sour cream (4 ounces/113 grams)
½ teaspoon table salt

Test Kitchen Techniques

Ingredients

8 tablespoons unsalted butter, cut into 4 pieces
2 ounces (57 grams) bittersweet chocolate, chopped
½ cup Dutch-processed cocoa (1 ½ ounces/43 grams)
¾ cup unbleached all-purpose flour (3 ¾ ounces/106 grams)
½ teaspoon baking soda
¾ teaspoon baking powder
2 large eggs
¾ cup sugar (5 ¼ ounces/149 grams)
1 teaspoon vanilla extract
½ cup sour cream (4 ounces/113 grams)
½ teaspoon table salt

Test Kitchen Techniques

Why This Recipe Works

Cupcakes shouldn’t be complicated, but homemade versions can take a lot of time and store-bought mixes don’t deliver good chocolate flavor. We wanted the consummate chocolate cupcake—one with a rich, buttery flavor, a light, moist, cakey texture, and just the right amount of sugar—but we wanted it to be almost as quick and easy to make as the cupcakes that come from a box.

For the mixing method, we found that the melted-butter method often used for mixing muffins, quick breads, and brownies—a method that requires no mixer and no time spent waiting for butter to soften—worked best. The same procedure won out over the more conventional creaming method for our cupcakes, delivering a light texture with a tender, fine crumb. Moving on to tackle our desire for deep chocolate flavor, we found that a combination of cocoa powder and bittersweet chocolate delivered deep chocolate flavor and that ­mixing the cocoa powder with the butter and chocolate as they melted (rather than adding the cocoa to the dry ingredients) made the chocolate flavor even stronger and richer. Sour cream gave our cupcakes moistness and a little tang, while just the right amounts of baking soda and baking powder helped them rise to a gently domed shape that was perfect for frosting.

Before You Begin

This recipe does not double very well. Cupcakes made from a doubled batch and baked side by side in the oven yield a slightly compromised rise. It's best to make two separate batches and bake each separately. Store leftover cupcakes (frosted or unfrosted) in the refrigerator, but let them come to room temperature before serving.

Instructions

  1. Adjust oven rack to lower-middle position; heat oven to 350 degrees. Line standard-sized muffin pan (cups have 1/2-cup capacity) with baking-cup liners.
  2. Combine butter, chocolate, and cocoa in medium heatproof bowl. Set bowl over saucepan containing barely simmering water; heat mixture until butter and chocolate are melted and whisk until smooth and combined. Set aside to cool until just warm to the touch.
  3. Whisk flour, baking soda, and baking powder in small bowl to combine.
  4. Whisk eggs in second medium bowl to combine; add sugar, vanilla, and salt and whisk until fully incorporated. Add cooled chocolate mixture and whisk until combined. Sift about one-third of flour mixture over chocolate mixture and whisk until combined; whisk in sour cream until combined, then sift remaining flour mixture over and whisk until batter is homogenous and thick.
  5. Divide batter evenly among muffin pan cups. Bake until skewer inserted into center of cupcakes comes out clean, 18 to 20 minutes.
  6. Cool cupcakes in muffin pan on wire rack until cool enough to handle, about 15 minutes. Carefully lift each cupcake from muffin pan and set on wire rack. Cool to room temperature before icing, about 30 minutes. (To frost: Mound about 2 tablespoons icing on center of each cupcake. Using small icing spatula or butter knife, spread icing to edge of cupcake, leaving slight mound in center.)

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