My very good friend, Charlotte, had a birthday earlier this month and requested a yellow cake with chocolate frosting. I picked up at a rummage sale a two part cake pan to make filled cakes (most of the pictures were fruit based fillings but I immediately thought chocolate).
To start with, I used a recipe from America’s Test Kitchen that combines the technique of a chiffon cake to a butter cake in order to get a moist, tender and fluffy cake. Of course, that requires that you actually read the recipe and only put in 6 yolks and 3 whites. I put in 3 whole eggs, 3 yolks and 3 whites and the cake was a little dry – this was entirely mitigated by the pudding filling but, the fact remains that I messed things up a bit by not being careful with my reading of the recipe.
In any event, Charlotte was happy with her birthday cake and I was happy with the leftovers!
Pudding Filled Yellow Cake
2 ½ cups cake flour, plus extra for dusting pans
1 ¼ teaspoons baking powder
¼ teaspoon baking soda
¾ teaspoon table salt
1 ¾ cups sugar, divided
10 tablespoons (1 1/4 sticks) unsalted butter, melted and cooled slightly
1 cup buttermilk
3 tablespoons vegetable oil
2 teaspoons vanilla extract
6 large egg yolks
3 large egg whites
Bring all ingredients to room temperature before beginning.
Adjust oven rack to middle position and heat oven to 350 degrees. Grease your cake pans, dust pans with flour and knock out excess. I used my Mrs. Fields Fill N Flip Cake pans but you can use two 9-inch-wide by 2-inch-high round cake pans.
Whisk flour, baking powder, baking soda, salt and 1 1/2 cups sugar together in large bowl. In a medium bowl, whisk together melted butter, buttermilk, oil, vanilla, and yolks.
In clean bowl of stand mixer fitted with whisk attachment, beat egg whites at medium-high speed until foamy, about 30 seconds. With machine running, gradually add remaining 1/4 cup sugar; continue to beat until stiff peaks just form, 30 to 60 seconds (whites should hold peak but mixture should appear moist). Transfer to bowl and set aside.
Add flour mixture to now-empty mixing bowl fitted with whisk attachment. With mixer running at low speed, gradually pour in butter mixture and mix until almost incorporated (a few streaks of dry flour will remain), about 15 seconds. Stop mixer and scrape whisk and sides of bowl. Return mixer to medium-low speed and beat until smooth and fully incorporated, 10 to 15 seconds.
Using a rubber spatula, stir 1/3 of whites into batter to lighten, then add remaining whites and gently fold into batter until no white streaks remain. Divide batter evenly between prepared cake pans. Lightly tap pans against counter 2 or 3 times to dislodge any large air bubbles.
Bake until a toothpick inserted into center comes out clean, 20 to 22 minutes. Cool cakes in pans on wire rack for 10 minutes. Loosen cakes from sides of pans with small knife, then invert onto wire rack. Cool completely on rack, about 1 1/2 hours before filling and frosting.
You don’t want your filling in a Fill and Flip cake to be too dense. You can lighten pudding to almost mousse like consistency with a little extra work. To make a mock mouse: add cream instead of milk to a small box of instant pudding and, using a hand mixer or a whisk and some elbow grease, whip until it is almost mousse like.
For the frosting, I used a chocolate buttercream that I typically use on Doberge cake:
Rich Chocolate Buttercream Frosting
1 ounce square semi-sweet chocolate
1/4 cup milk or cream
2 cups confectioners’ sugar, sifted
2 sticks butter, softened
1 cup good quality unsweetened cocoa
1 teaspoon vanilla extract
Melt chocolate with milk and whisk to combine. Cream sugar and butter, then add cocoa, then the melted chocolate milk and vanilla.