Once the icing is in the piping bags, it’ll keep for several days. Use immediately or store in the refrigerator.
Raw Egg White Alternative:
As an alternative to raw egg whites, combine the meringue powder and warm water in the stand mixer and whisk until foamy. Continue with step #2.
Build your Graham cracker gingerbread houses
Use a sharp serrated knife to cut the crackers into the desired shapes.
Glue the pieces together with the royal icing.
Pro Tip: Use cracker scraps to reinforce the crackers if necessary and allow the icing to harden slightly before building too high!
Decorate the house with lots of candy and icing. Try out different piping tips for fun designs and remember you can use gel food coloring to tint the icing. Don’t forget to decorate the board or plate!
After you finish decorating your house, you get to decide when to eat it!