Cookie decorating season is officially in gear (and thanks to the Real Simple food department, I have an arsenal of supplies—miniature Menorahs, blue and silver sprinkles, icing galore—waiting in my kitchen). To make your iced sugar cookies look like they came from a professional bakery—that is, smooth, even and fully covered—just follow this advice:
First, outline the cookie using a bottle filled with icing, leaving a slight border from the edge of the cookie. (Using an icing bottle with a tip will give you the most control.) Then pipe icing onto the cookie to fill it in, and using an offset spatula, spread the icing evenly. Want to make it look really spectacular? Shake the cookie after smoothing out the icing to eliminate bumps and allow the icing to settle.