Wash the apples, remove the stems, and rub them dry. Insert the wooden stick where the stem was.
Heat the water, sugar, and lemon juice in a saucepan and allow it to caramelize. If you have a cooking thermometer, aim for 230°F. Then add the food coloring.
Remove the caramel mixture from the heat and dip the apples in it one by one, turning until you achieve a consistent coating. Once any excess has dripped back into the saucepan, place each candy apple on a tray covered with parchment paper to cool.
When the candy coating is firm, you can place the candy apple in a decorative cupcake liner.