Make a quick and easy glaze for cookies by warming canned white frosting in the microwave. Then paint colorful designs on the cookie shapes using Flavor Paints – a fragrant mix of vanilla or lemon extract and food color.
Preheat oven to 325°F. Mix flour and salt in large bowl. Set aside. Beat butter and sugar in large bowl with electric mixer on medium speed until light and fluffy. Add egg and vanilla; mix well. Gradually beat in flour mixture on low speed until well mixed.
Roll dough on generously floured surface to 1/4-inch thickness. Cut out shapes, such as rounds or flowers, with 3-inch heart-shaped cookie cutters. Place on ungreased baking sheets.
Bake 8 to 10 minutes or until edges start to brown. Cool on baking sheets 1 minute. Remove to wire racks; cool completely.
Spoon frosting into medium microwavable bowl. Microwave on HIGH 20 to 30 seconds, stirring every 10 seconds. (Frosting should be a pourable consistency.) Dip tops of cookies into frosting. Place frosted cookies on wire rack set over foil-covered baking sheet. (The baking sheet will catch drips.) Let stand 10 minutes or until frosting is dried.
Prepare desired colors of Flavor Paints (see tip). Using small clean paint brushes, paint designs on cookies.