White Butter Cake

1 3/4 cups (175 grams) sifted cake flour
2 teaspoons baking powder
1/4 teaspoon salt
1/2 cup (113 grams) unsalted butter, at room temperature
1 cup (200 grams) granulated white sugar, divided
2 large eggs, separated
1 teaspoon pure vanilla extract
1/2 cup (120 ml) milk
1/8 teaspoon cream of tartar
Filling:
1/4 cup strawberry puree (sauce) or 1/4 cup of your favorite jam
Cream Cheese Frosting:
1/2 cup (113 grams) unsalted butter, room temperature
1 - 8 ounce (227 grams) cream cheese, room temperature
2 1/2 cups (290 grams) confectioners' (icing or powdered) sugar, sifted
zest of 1 lemon or orange
1 teaspoon pure vanilla extract
Fresh Berries
Note: Cream of tartar is used when whipping egg whites to stabilize them, and to prevent over beating and the whites from drying out.

Preheat oven to 350 degrees F (175 degrees C) and place rack in center of oven. Grease and flour two - 8 inch (20 cm) round cake pans. Alternatively spray pan with Baker's Joy. Line bottom of pan with parchment paper and grease and flour parchment paper. Set aside.
White Butter Cake: While eggs are still cold separate the eggs, placing the yolks in one bowl and the whites in another bowl. Cover the two bowls with plastic wrap and allow the eggs to come to room temperature before using (about 30 minutes).
In a mixing bowl sift or whisk together the flour, baking powder, and salt. Set aside.
In bowl of electric mixer, beat the butter until soft (about 1-2 minutes). Add 3/4 cup (150 grams) of the sugar and beat until light and fluffy (about 2-3 minutes). Add egg yolks, one at a time, beating after each addition. Scrape down the sides of the bowl. Add the vanilla extract and beat until combined.
With the mixer on low speed, alternately add the flour mixture and milk, in three additions, beginning and ending with the flour.
In a clean bowl of your electric mixer, with the whisk attachment, beat the egg whites until foamy. Add the cream of tartar and continue beating until soft peaks form. Gradually add the remaining 1/4 cup (50 grams) of sugar and continue to beat until stiff peaks form. With a rubber spatula gently fold a little of the whites into the batter to lighten it, and then fold in the remaining whites until combined. Do not over mix the batter or it will deflate.
Divide the batter evenly between the two prepared pans and smooth the tops with an offset spatula or the back of a spoon. Bake in the preheated oven for approximately 20 - 25 minutes, or until a toothpick inserted in the center of the cake comes out clean.
Cool the cakes in their pans on a wire rack for 10 minutes. Place a wire rack on top of the cake pan and invert, lifting off the pan. Once the cakes have completely cooled, wrap in plastic and place the cake layers in the freezer for at least an hour. (This is done to make filling and frosting the cakes easier.)
Cream Cheese Frosting: Cream the butter and cream cheese together until nice and smooth with no lumps. Add the confectioners' sugar, one cup at a time, beating well after each addition. Scrape down the sides of the bowl. Add the zest and vanilla extract and beat on high speed until the frosting is light and fluffy.
Assemble: Place one of the cake layers, top of the cake facing down, onto your serving platter. Spread the cake layer with about 1/4 cup of strawberry sauce or your favorite jam. Next, spread about 3/4 cup of the frosting on top of the sauce or jam. Place the next cake layer, top of the cake facing down, onto the filling. Spread the remaining frosting over the top and sides of the cake. Cover and refrigerate until serving time. Just before serving garnish the top of the cake with fresh berries.
Makes one - 8 inch (20 cm) two layer cake.

Vanilla Cupcakes

1/2 cup (113 grams) unsalted butter, room temperature
2/3 cup (130 grams) granulated white sugar
3 large eggs
1 teaspoon pure vanilla extract
Zest of 1 large lemon (optional)
1 1/2 cups (210 grams) all purpose flour
1 1/2 teaspoons baking powder
1/4 teaspoon salt
1/4 cup (60 ml) milk
Buttercream Frosting:
2 cups (230 grams) confectioners sugar (icing or powdered sugar), sifted
1/2 cup (113 grams) unsalted butter, room temperature
1 teaspoon pure vanilla extract
2 tablespoons milk or light cream
Assorted food colors (if desired)
Lemon Zest - The yellow outer rind of the lemon that contains the fruit's flavor and perfume. The rind being the outer skin of the lemon which consists of both the yellow zest and white membrane (pith).

Preheat oven to 350 degrees F (177 degrees C) and lightly butter or line 12 muffin cups with paper liners.
For the Cupcakes: Cream the butter and sugar until light and fluffy. Add the eggs, one at a time, beating well after each addition. Beat in the vanilla extract and lemon zest.
In a separate bowl whisk together the flour, baking powder, and salt.
With the mixer on low speed, alternately add the flour mixture and milk, in three additions, beginning and ending with the flour. Scrape down the sides of the bowl.
Evenly fill the muffin cups with the batter and bake for about 18-20 minutes or until nicely browned and a toothpick inserted into a cupcake comes out clean. Remove from oven and place on a wire rack to cool. Once the cupcakes have completely cooled, frost with icing. If you want flat topped cupcakes then slice off the dome of each cupcake, with a sharp knife, before frosting.
For the Frosting: In an electric mixer, or with a hand mixer, cream the butter until smooth and well blended. Add the vanilla extract. With the mixer on low speed, gradually beat in the sugar. Scrape down the sides of the bowl. Add the milk and beat on high speed until frosting is light and fluffy (about 3-4 minutes). Add a little more milk or sugar, if needed. Tint the frosting with desired food color (I use the paste food coloring that is available at cake decorating stores and party stores).
Makes about 12 cupcakes