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1
Let separated eggs stand at room temperature for 30 minutes. In a large bowl, cream butter and sugar until light and fluffy. Add egg yolks and orange zest; beat well. Combine flour, baking powder and salt; add to the creamed mixture and mix well (batter will be thick). In a small bowl and with clean beaters, beat the egg whites on high speed until stiff. Fold into batter.
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2
Pour into a greased and floured
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3
. Bake at 375u00b0 for 25-30 minutes or until toothpick inserted in the center comes out clean. Cool on a wire rack for 10 minutes; invert onto a wire rack to cool completely. Transfer to a 15x12-in. covered board.
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4
Place 3/4 cup frosting in each of two small bowls; tint one pastel pink and one pastel blue. Set aside 2-1/2 cups frosting for trim and border. Cover and set bowls aside. Frost cake with remaining frosting.
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5
Using dental floss or a sharp knife, mark a straight line lengthwise down the center of the cake. Mark additional lengthwise straight lines, dividing the cake into four equal sections. Mark five lines widthwise, dividing the cake into a total of 24 squares.
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6
For booties, insert plain pastry tip # 8 into a pastry bag or a plastic bag with small hole; add pink frosting. In alternating squares, pipe an elongated dot, raising up at one end to form the heel.
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7
For rattles, use plain tip #8 and blue frosting. In each of the empty squares, pipe one large dot and one small dot, leaving 3/4 in. between dots. Use plain tip #2 and blue frosting to pipe a line connecting the dots.
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8
For trim, use plain tip #2 and reserved white frosting. Pipe a bow and trim on each bootie and a bow on each rattle.
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9
Use star tip #20 to pipe rows of white shells on top of the straight lines. Pipe a row of shells around top and bottom edges of cake.
