To hold the pieces together instead of icing, this can be used. Do not do this part with the children as it is extremely hot. This is the way my mom does it but I will also credit http://www.kaboose.com
cup white sugar (1 cup all together but it would not let me enter just one ingredient!)
Pour sugar into a heavy pot.
Place over medium heat and cook, stirring often, until the sugar melts and liquefies - about 5 to 10 minutes. Watch closely to avoid burning, and be very careful handling it because it is extremely hot.
Use to glue gingerbread cookie or graham cracker pieces together to make candy houses.