This is a simple to follow recipe for How to Make a PYO (Paint your own) Cookie by Brooke Houschildt  Royal Icing 2 Lbs Confectioner Sugar 1/3 C plus one tablespoon Meringue Powder ¾ C Water (Approx.) Add half of the water to the Meringue Powder. Mix with a hand whisk or mixer until dissolved. Add powdered sugar and beat with paddle on low until all sugar is incorporated and then mix on medium-high for 4-6 minutes. Icing will be stiff. (Keep covered with a damp cloth at all times.) To thin, add a few drops of water at a …