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1
Line a greased 15x10x1-in. baking pan with waxed paper; grease the paper and set aside.
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2
In a large bowl, beat egg yolks on high speed for 5 minutes or until thick and lemon-colored. Gradually beat in 1/3 cup sugar. Beat in extract. Sift flour and baking powder together twice; gradually add to yolk mixture and mix well (batter will be very thick).
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3
In a small bowl with clean beaters, beat egg whites on medium speed until soft peaks form. Gradually beat in the remaining sugar, 1 tablespoon at a time, on high until stiff peaks form. Gradually fold into batter. Spread evenly into prepared pan.
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4
Bake at 375u00b0 for 10-15 minutes or until cake springs back when lightly touched. Cool for 5 minutes. Invert onto a kitchen towel dusted with confectioners' sugar. Gently peel off waxed paper. Roll up cake in the towel jelly-roll style, starting with a short side. Cool completely on a wire rack.
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5
For filling, in a small heavy saucepan over medium heat, whisk the eggs, sugar, lemon juice and zest until blended. Add butter; cook, whisking constantly, until mixture is thickened and coats the back of a metal spoon. Transfer to a small bowl; cool for 10 minutes. Cover and refrigerate until chilled.
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6
Unroll cake; spread filling over cake to within 1/2 inch of edges. Roll the cake up again. Cover and refrigerate for 4 hours.
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7
Using a serrated knife, cut cake roll into one 5-1/2-inch-long piece and one 3-3/4-inch-long piece. Trim off uncut ends of each cake roll. With a cut end down, place each cake roll on a serving plate.
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8
For frosting, beat cream cheese in a small bowl until smooth. Add the confectioners' sugar, lemon extract and enough milk to achieve spreading consistency.
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9
Tint 1/3 cup of frosting red and 1/4 cup blue. Frost sides of the large firecracker white. Frost the small firecracker red, white and blue, creating a striped pattern.
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10
Flatten the gumdrops with a rolling pin. Using a 1-inch star cookie cutter, cut eight gumdrop stars. Arrange three stars on side of the large firecracker, press them gently into the frosting.
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11
Insert one end of each spaghetti piece into a remaining gumdrop star. Break off the opposite end of each piece to create different lengths. Insert spaghetti into tops of the firecrackers.
