LEMON-LIME LAYER CAKE

Steps:

• Preheat oven to 350°.
• Coat 2 (9-inch) round cake pans with cooking spray; line bottoms of pans with wax paper. Coat wax paper with cooking spray.
• Place sugar and butter in a large bowl; beat with a mixer at medium speed until well blended (about 5 minutes).
• Add egg substitute and the next 3 ingredients (through 1 tablespoon juice); beat well.
• Combine flour, baking powder, baking soda, and salt, stirring well with a whisk.
• Add flour mixture and buttermilk alternately to sugar mixture.
• Spoon batter into prepared pans.
• Bake for 30 minutes or until a wooden pick inserted in center comes out clean.
• Cool in pans on a wire rack 10 minutes; remove cakes from pans.
• Carefully peel off wax paper.
• Cool completely on wire racks coated with cooking spray.
• To prepare icing, place 1 teaspoon lemon rind and next 3 ingredients (through cream cheese) in a medium bowl; beat with a mixer at medium speed until smooth (about 1 minute).
• Gradually add powdered sugar, beating at low speed just until blended (do not overbeat).
• Cover and chill for 30 minutes.
• Place 1 cake layer on a plate; spread with 1/2 cup icing.
• Top with remaining cake layer.
• Spread remaining icing over top and sides of cake.
• Chill 1 hour.
• Store cake loosely covered in refrigerator.