
I always have the house "parts" baked and cooled ahead of time, and after many years of doing this, we have it down to a science.
I'm not much of a recipe follower, which is why you'll rarely see links to other recipes here; there's millions of better recipes than mine, I just stubbornly prefer to muddle through until I've concocted my own creation (or disaster!).
However, with my daughter's time-honored Gingerbread party I didn't want to experiment. And happily, (as you'll see) the gingerbread turned out great.
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Here are some good cut-out-and-assembly instructions, we use slightly smaller measurements since we're making 6 houses...That equals a LOT of dough!

We DO use commercial Royal Icing however, just to "cement" the house parts together. Yes it has egg-whites. But any and all attempts I have made at decent vegan royal icing have ended up in collapsed houses that look somewhat like a Hurricane Katrina re-creation... Not the effect you're going for at a Holiday party!

However, once the houses are assembled and "set", we mix up some fairly decent vegan frosting for the final (and fun, messy, sticky, icky, sugar-coated) step of decorating...
And no, I am sure some of the candy isn't vegan. Bring on the vegan Police.

Here is my approximate icing recipe (and <-- here is what happens when big sisters get bored with Gingerbread houses); play with it according to the humidity in your kitchen and how much liquid your powdered sugar absorbs.
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"Almost" Royal Icing
7 Tablespoons water
4 Tablespoon Ener-G egg replacer (don't use another brand)
7 cups of powdered sugar (you can make non-bone-char powdered sugar with beet sugar and cornstarch in a coffee grinder, Whole Foods sells vegan powdered sugar too)
1/2 teaspoon cream of tartar
Mix dr ingredients together. Add to water. I don't usually add all the powdered sugar/cream of tarter, just keep mixing it in until the right consistency. It still takes longer to set up than royal icing
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And just in case you're thinking this is a worthless post with nothing but frosting, here are the amazing vegan chocolate-chip muffins that big sister Jessika made for everyone for breakfast. (She made the birthday cake too! )
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Pretty generous of her since she had to put up with a housefull of "younger" girls all night!
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Chocolate-Chip-Banana Muffins
3 very ripe bananas
1/4 cup coconut oil
1 cup sugar
2 cups sifted whole wheat pastry flour (or white, or whatever)
1 tsp salt
1 tsp baking soda
1 cup chocolate chips, chopped to make them a bit smaller, and tossed with a bit of cornstarch so they don't "sink" in the batter
Pre-heat oven to 360 degrees.
In a large bowl, mash the bananas with a fork till mushy.
Add the oil and sugar and mix together until creamy.
In a separate bowl combine the dry stuff.
Combine with the banana mixture, stirring gently just to combine.
Grease (WELL!) or line a muffin pan, and fill each muffin about 2/3 full with batter. Bake for about 25 minutes, or until a toothpick inserted into a muffin comes out clean.
Here's hoping your Holidays are sweet and memorable.