
Time: 2 1/4 hours, plus cooling time.
Bakers' tip: To make a pure white cake, use your fingers to rub off the browned surface of each layer before assembling.
Ingredients
-
Cake
-
10
ounce
unsalted butter, at room temperature, plus more for pans
-
3 1/2
cups
cake flour
-
4
teaspoons
baking powder
-
1/2
teaspoon
salt
-
2 1/4
cups
granulated sugar
-
7
large egg whites, at room temperature
-
Cranberry filling
-
3 3/4
cups
cranberries, divided
-
3/4
cup
granulated sugar
-
1 1/2
cups
cranberry or cherry preserves
-
Buttercream
-
5
large egg whites, at room temperature
-
Pinch of salt
-
1 1/4
cups
granulated sugar
-
12
ounces
white chocolate (bars or a block, not chips), divided
-
1
pound
unsalted butter, cut into pieces and at room temperature
-
Assembly
-
1/2
cup
colorless liqueur such as crème de cacao or kirsch
-
About 2 tbsp. powdered sugar
Preparation
1. Preheat oven to 325°. Butter two 9-in. cake pans; set aside.
2.
Make cake: In a large bowl, sift together flour, baking powder, and
salt. Set aside. In the bowl of a stand mixer, beat butter and sugar
together on low speed until light and fluffy. Add egg whites in 3
batches, scraping inside of bowl as needed. Beat in flour mixture in 5
batches, adding 1/4 cup water after each addition (you will begin and
end with flour); make sure flour is completely blended each time before
adding water. Pour batter into prepared pans, dividing evenly. Smooth
tops with a spatula.
3. Bake until center of cake feels firm to
the touch and a toothpick inserted in center comes out clean, about 40
minutes. Cool cakes completely in pans on a rack.
4. Meanwhile,
make cranberry filling: Combine 3 cups cranberries, the sugar,
preserves, and 1/4 cup water in a small saucepan and cook over high
heat until cranberries pop and preserves melt, 5 to 10 minutes. Add
remaining 3/4 cup cranberries, stir to combine, and remove from heat.
Transfer to a small bowl and chill until ready to assemble cake.
5.
Make buttercream: Fill a 2-qt. pan with about 1 in. water and bring to
a simmer over low heat. Put egg whites, salt, and sugar in the bowl of
a stand mixer and whisk to combine. Place bowl over hot water, making
sure bottom of bowl isn't touching water, and heat whites, whisking
constantly, until hot to the touch, 3 to 5 minutes. Remove pan and bowl
from heat.
6. Put bowl of warm whites on the mixer and whisk on
high speed until tripled in volume and side of bowl is cool to the
touch, about 10 minutes.
7. Meanwhile, chop 4 oz. white
chocolate, put in a medium metal mixing bowl, and set in same pan of
warm water off the heat to melt slowly, stirring occasionally. Remove
bowl from pan and let cool to room temperature.
8. Reduce mixer
speed to low and whisk butter into whites, about 1/4 cup at a time,
until incorporated. Continue to whisk on low speed until smooth and
fluffy, about 10 minutes (mixture may look grainy at some point but
will come together).
9. With a rubber spatula, gently fold melted chocolate into buttercream until completely combined.
10.
Assemble: Rub tops of both cakes gently with your hands to remove
browned outer surface, then carefully invert cakes and rub undersides
so that cakes are completely white. Place 1 cake layer on a cake stand
or serving plate, top side up. Using a pastry brush, brush top with
half the liqueur. Spread about 1 1/2 cups cranberry mixture over layer
with a metal spatula, leaving a 1/2-in. empty border around edge. Place
second cake layer on top, flattest side down, and brush with remaining
liqueur. Spread top and sides of cake with a thin layer of buttercream
to seal in crumbs and chill 30 minutes. Cover with remaining
buttercream, starting with the sides and covering the top last.
11.
Use the palm of your hand to warm remaining chocolate. Shave smooth
side of chocolate bar with a vegetable peeler to make thin curls;
scatter curls over cake's top. Sift powdered sugar over cake. Serve
with remaining cranberry mixture on the side.
Make ahead: Baked
cake layers can be wrapped in plastic and stored at room temperature or
in the fridge up to 2 days ahead. Cranberry filling can be made up to 2
days ahead and chilled.
** This was our Christmas Eve Cake at our family gathering in December, 2008.