I divided the batter equally into 3 round baking pans, by weighing about 16 1/2 oz in each pan to make even layers. After it baked and cooled, I cut the domes off the cakes. |
The filling for the cake. |
Repeat the layering with the rest of the filling and raspberries. |
Top with 3rd layer of chocolate cake, but put the layer upside down so that the top of the cake is flat. After doing this, I put it in the fridge for 30 min to set before frosting. |
The frosting. I ended up using the hand mixer to incorporate the whipped cream with the chocolate. |
I did first put a crumb coat for the frosting, and then put it in the fridge to set for 20 min. Then I put 1 more layer of frosting on top of that to make it more even. |
What's better than chocolate and raspberries, especially when it's close to Valentine's day? Discovered this recipe on King Arthur's website with their Bake Along series! There is a bake along blog too for this cake with some pictures and tips.
If I try this recipe again, then I might make the filling and frosting ahead of time the day before to save some time. I needed 2 packages of 6 oz raspberries for this cake.
Chocolate Mousse Cake with Raspberries (~from King Arthur)
Ingredients:
- 1 3/4 cups King Arthur Unbleached All-Purpose Flour or Gluten-Free Measure for Measure Flour
- 2 teaspoons baking soda
- 1 teaspoon baking powder
- 1 teaspoon salt
- 2 cups granulated sugar
- 1 cup unsweetened cocoa powder, natural or Dutch-process cocoa
- 1/2 cup vegetable oil
- 1 cup buttermilk or yogurt (Greek or regular; nonfat, low fat, or full fat)
- 1 cup boiling water (used 1 cup coffee)
- 2 teaspoons vanilla extract
- 3 large eggs
Filling
- 2 tablespoons soft butter
- 8-ounce package cream cheese, at room temperature
- 1 cup confectioners' sugar, divided
- 1/2 teaspoon vanilla extract
- 1/8 teaspoon salt
- 2/3 cup semisweet chocolate chips, melted
- 1 cup heavy cream
- 1 teaspoon Instant ClearJel, optional* (did not use this)
- 1/2 cup semisweet chocolate mini chips, optional (did not use this)
- 1 1/2 to 2 pints fresh raspberries, washed and dried
- *See "tips," below.
Frosting
- 1/2 cup vegetable shortening, butter-flavored preferred* (used 1/2 cup unsalted butter)
- 8 tablespoons (1/2 cup) unsalted butter, at room temperature
- 1/4 teaspoon salt
- 4 cups confectioners' sugar, sifted
- 1/2 cup unsweetened cocoa, natural or Dutch-process*
- 1/4 cup milk
- 1 teaspoon vanilla extract
- *See "tips," below.
Directions:
- Preheat
the oven to 325°F. Lightly grease two 8" round pans at least 2” deep
(and preferably 3” deep); four 8" round pans at least 1 1/2” deep; or
three 9" round pans. If you have parchment rounds, line the pans with
parchment, and grease the parchment. Note: If your pan assortment doesn't
include any of these particular combinations, you can bake the cake batter
in batches; the unbaked batter won't suffer while awaiting its turn in the
oven.
- To make
the cake layers: Weigh your flour; you'll find its weight by toggling to
"ounces" at the top of the ingredient section above. Or measure
it by gently spooning it into a cup, then sweeping off any excess. Whisk
together the flour and remaining dry ingredients in a large mixing bowl;
or combine thoroughly using a stand mixer equipped with the whisk or
beater attachment. Check to make sure there aren’t any hard lumps in the
mixture; if there are, press them through a sieve.
- Combine
the oil, buttermilk or yogurt, boiling water and vanilla in a medium bowl
or large measuring cup. Add to the dry ingredients and beat at medium
speed for 30 seconds to 1 minute, until the batter is smooth.
- Scrape the
sides and bottom of the mixing bowl, then beat in the eggs one at a time.
Mix on medium speed for another minute, or until smooth.
- Divide the
batter among the prepared pans. Bake for 45 to 50 minutes for two 8” pans;
or 25 to 30 minutes for four 8" pans or three 9" pans, until the
cake just begins to pull away from the edge of the pan, and a tester
inserted in the center comes out with just a few moist crumbs. Remove from
the oven and place on a rack to cool for 15 minutes. Run a table knife
around the edge of each pan to free the crust, and turn the cakes onto the
rack to cool completely. While the cake layers are cooling, make the
filling.
- To make
the filling: In a large mixing bowl, combine the butter, cream cheese, 3/4
cup (3 ounces) of the confectioners' sugar, vanilla, and salt, mixing at
medium-low speed until smooth. Melt the chocolate; a minute or less in the
microwave should be sufficient to soften the chips enough that you can
stir them until completely melted and smooth. Add the melted chocolate to
the bowl and mix on medium-high speed for 1 minute, or until a bit
lightened and fluffy.
- Whisk
together the remaining 1/4 cup confectioners' sugar with the Instant
ClearJel. Beat the heavy cream until soft peaks form, then add the
confectioners’ sugar mixture. Beat just until the cream is stiff; guard
against over-beating, which will turn the cream grainy. Fold the whipped
cream into the cream cheese mixture; scrape the bowl, and stir to combine
any sticky residue. Finally, fold in the chocolate mini chips, if you’re
using them.
- Split the
cake layers horizontally if you've baked two deep 8" cakes; trim any
domes off the tops if you've baked three or four individual layers. Place
the first layer on a serving plate (line the edges with strips of waxed or
parchment paper to keep the plate clean), and spread it with one-third of
the filling (1 cup; 7 5/8 ounces; 216g). Cut 1/2 pint of raspberries in
half lengthwise (rather than around the circumference), and place them
over the filling, covering its entire surface. Repeat until all the layers
are stacked; place the last layer bottom-side up for a flat surface on
top.
- Once the
layers are assembled with filling and raspberries, place the cake in the
refrigerator or freezer for at least 30 minutes to firm it up. This will
make frosting the cake much easier since the layers are less likely to
slide around and chilling helps prevent the cake from shedding crumbs as
you frost. While the cake is chilling, make the frosting.
- To make
the frosting: In a large bowl, beat together the shortening, butter, and
salt.
- Sift the
confectioners' sugar and cocoa through a strainer to remove any lumps, and
gently beat into the butter mixture alternately with the milk. Add the
vanilla. Beat on medium-high speed for 2 minutes, or until fluffy.
- To finish
the cake: For the best-looking cake, do the frosting in two steps. First,
spread a very thin layer of frosting around the sides and across the top;
this is called a crumb coat. You should actually be able to see the cake
through the frosting in spots, it’s that thin. Refrigerate the cake for 20
minutes to let this layer set up.
- Once the
cake is chilled, use the remaining frosting to coat it thoroughly and
evenly. The frosting will be thin, but the cake should be completely
coated, with no bare patches. If you have any leftover frosting, use it to
pipe decorations on the top and/or around the base.
- Refrigerate
the cake until ready to serve. Garnish with fresh raspberries just before
serving.
- Store any
leftovers in the refrigerator for up to 3 days; freeze for up to a week.
Tips from our bakers
- Substitute 1 cup hot brewed coffee for the water in the recipe, if desired; this will enhance the cake's chocolate flavor without adding any coffee flavor of its own. Alternatively, add 1 1/2 teaspoons espresso powder to the batter along with the other dry ingredients.
- The total weight of the cake batter will be about 50 ounces (1417g). To ensure your layers are all the same size, divide the batter's weight by the number of layers you're baking, and weigh the amount into each pan. For two deep 8" layers, use about 25 ounces (709g) batter in each. For three 9" layers, use about 16 1/2 ounces (468g) in each pan. For four shallow 8" layers, use about 12 1/2 ounces (354g) batter in each pan.
- Instant ClearJel will help stabilize the filling if the cake is baked and served during particularly hot weather.
- When making the frosting, use natural cocoa for mild, milk chocolate-type flavor and lighter color. For darker frosting with richer, more assertive chocolate flavor, use Dutch-process cocoa.
- Substitute 1/2 cup unsalted butter for the shortening in the frosting, if desired. If the weather is particularly hot, shortening will help stabilize the frosting.
- Cake layers, frosting, and filling can all be made up to three days ahead, and the cake assembled just before serving. Store the layers, well wrapped, at room temperature; refrigerate the frosting and filling in airtight containers or tightly covered bowls. When you're ready to assemble the cake, remove the filling and frosting from the fridge and warm at room temperature until soft enough to spread easily.
- The entire cake can be made ahead and frozen, tightly wrapped, for up to a week. (Don't add the fresh raspberry garnish on top if you're going to freeze the cake.) Thaw cake overnight in the refrigerator before serving.
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