"Flavored drink mixes lend their hues and flavors to plain frosting, sandwiching pairs of wafer cookies into colorful confections...."
INGREDIENTS
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3 tablespoons butter or margarine, softened
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2 cups powdered sugar
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1 to 2 tablespoons milk
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3 packages (0.13 to 0.19 oz each) unsweetened soft drink mix (3 colors)
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1 box (12 oz) vanilla wafer cookies