LEMON CURD FOR CAKE FILLING RECIPES

Steps:

• Preheat oven to 350 degrees F (175 degrees C). Grease and flour two 8 inch round pans. Mix together the flour, baking powder and salt. Set aside.
• In a large bowl, cream together the butter and sugar until light and fluffy, about 5 minutes. Beat in the eggs one at a time, then stir in the vanilla. Beat in the flour mixture alternately with the milk, mixing just until incorporated.
• Pour batter into prepared pans. Bake in the preheated oven for 30 minutes, or until a toothpick inserted into the center of the cake comes out clean. Allow to cool in pans on wire racks for 10 minutes. Then invert onto wire racks to cool completely.
• To make filling: In medium saucepan, mix together 1 tablespoon lemon zest, 1/2 cup lemon juice and 1 tablespoon cornstarch until smooth. Mix in 6 tablespoons butter and 3/4 cup sugar, and bring mixture to boil over medium heat. Boil for one minute, stirring constantly. In small bowl, with a wire whisk, beat egg yolks until smooth. Whisk in a small amount of the hot lemon mixture. Pour the egg mixture into the sauce pan, beating the hot lemon mixture rapidly. Reduce heat to low; cook, stirring constantly, 5 minutes, or until thick (not to boil).
• Pour mixture into medium bowl. Press plastic wrap onto surface to keep skin from forming as it cools. Cool to room temperature. Refrigerate 3 hours.
• To make frosting: In large bowl, beat confectioners' sugar, 1/2 cup butter, 2 tablespoons lemon juice and 1 teaspoon lemon zest until smooth. Beat in milk, and increase speed and continue to beat until light and fluffy.
• To assemble: With long serrated knife, split each cake layer in half horizontally, making 4 layers. Place 1 layer, cut side up, on a serving plate. Spread with half of the lemon filling. Top with another layer, and spread with 1/2 cup frosting. Add third layer, and spread with remaining half of the lemon filling. Press on final cake layer, and frost top and sides of cake with remaining frosting. Refrigerate cake until serving time.

Steps:

• Heat oven to 325°F. Generously grease shaped Bundt® pan and Bundt® Tunnel Insert with shortening and lightly flour, or spray with baking spray with flour. Line 4 regular-size muffin cups with paper baking cups.
• In large bowl, beat cake mix, water, oil and egg whites with electric mixer on low speed 30 seconds. Beat on medium speed 2 minutes, scraping bowl occasionally. Stir in lemon peel. Place 4 cups batter in Bundt pan. Place tunnel insert on center of Bundt pan. Fill muffin cups 2/3 full with remaining batter.
• Bake cake 35 to 40 minutes and cupcakes 18 to 20 minutes. Using sharp or serrated knife, immediately cut off excess cake across top of Bundt and tunnel insert pans. Carefully loosen insert pan; remove. Cool cake in pan 10 minutes; remove cake from pan to cooling rack, placing cake tunnel side down. Cool completely, about 1 hour.
• Turn cake over and spoon lemon curd into tunnel. Place cake filled side down on serving plate. Top cake with melted orange marmalade if desired. Store covered in refrigerator.