Sift 1 ½ cups icing sugar into large bowl. Mix in 4 tsp. milk and 1 ½ tsp. lemon juice until smooth. The icing should be the thickness of honey. If texture is too thick, stir in additional milk a spoonful at a time. If icing is too thin, stir in additional sifted icing sugar, a heaped spoonful at a time.

Divide icing into 5 or 6 small dishes or cups. Mix a few drops of food colouring into each dish to create assorted colours.

Use small, clean paintbrushes – one for each colour – to brush icing onto plain cookies. Make any design you like. Keep brushes in their own dish to avoid mixing up hues. If you want to paint one colour on top of another, let the icing harden on the cookie before painting over it with another colour. The icing firms up in about 15 min. Use your imagination or top with sprinkles to make beautiful cookies!