To paint the bars, omit the lime glaze. Prepare Royal Icing (p. xx) and spread an even layer over cooled uncut bars (save remaining Royal Icing to frost desired cookies). Let stand several hours or overnight until completely set. In separate bowls mix green and red liquid food coloring with a few drops of water to dilute food coloring slightly. Using clean new artist paintbrushes of different widths, paint plaid patterns on cookies. Let stand until set.
Nutrition Facts (Lime Sugar Bars)
108 calories; total fat 4g; saturated fat 2g; polyunsaturated fat 1g; monounsaturated fat 1g; cholesterol 16mg; sodium 59mg; potassium 15mg; carbohydrates 17g; fiber 0g; sugar 11g; protein 1g; trans fatty acid 0g; vitamin a 74IU; vitamin c 1mg; thiamin 0mg; riboflavin 0mg; niacin equivalents 0mg; vitamin b6 0mg; folate 15mcg; vitamin b12 0mcg; calcium 12mg; iron 0mg.
Meringue powder is a mixture of pasteurized dried egg whites, sugar, and edible gums. Look for it in the baking aisle of your supermarket or at a specialty food store.