Holiday Ornament Cookies

Cookies:
    1 1/2         cups (3 sticks) unsalted butter, at room temperature
    1         cup Domino Golden Sugar
    1         teaspoon pure vanilla extract
    1         large egg
    3 1/2         cups all-purpose flour
    1/4         teaspoon salt

Royal Icing:
    4         cups Domino Powdered Sugar
    3         tablespoons meringue powder
    1/3         cup, plus 2-3 tablespoons, warm water, divided
            desired food coloring

    To prepare cookies: In large bowl, beat butter and sugar until light and fluffy. Add vanilla and egg; beat until well combined. Scrape sides of bowl as needed. Add flour and salt; beat until just combined.
    Dump mixture onto lightly floured surface and divide in half. Shape each half into disks and wrap with plastic wrap. Refrigerate 30 minutes.
    Preheat oven to 350 F. Line two baking sheets with parchment paper.
    Working on lightly floured surface, roll dough to 1/2-inch thick. Cut cookies using ornament-shaped cookie cutter. Place cookies on prepared pans and bake 18-20 minutes, or until golden brown. Remove from oven and cool at room temperature.
    To make royal icing: In large mixing bowl, combine powdered sugar, meringue powder and 1/3 cup water. Beat on low speed until combined. Increase speed to medium-high and beat 8-10 minutes, adding 2-3 tablespoons warm water, as necessary. Icing should be stiff enough to hold peak when tested.
    Color royal icing with food coloring and decorate cookies.