Print out the gingerbread house pattern, or use a pattern of your own. Cut out the pattern on light cardboard (I used a large cereal box).
Click here for the gingerbread house pattern.
In a medium microwave-safe bowl, microwave corn syrup, brown sugar, and margarine for 1 minute. Stir, return to microwave for 1 minute.
Stir, return for additional 1-1 1/2 minutes stirring every 30 sec until the margarine is melted and the sugar is completely dissolved.
In a large bowl or mixer, combine flour and salt. Add the heated sugar mixture. Blend in the mixer, or knead with your hands, into the dough.
Combine the dough into a large mound and wrap it in plastic. Let dough rest for 30 minutes at room temperature.
After 30 minutes, turn the oven to 350 degrees. Cut parchment paper the size of your cookie sheet, lightly flour and roll out a quarter of the dough at a time into ¼ inch thickness. This will make 2 houses, but you can make 3 houses rolling out the scraps of dough. If the dough is too hard, you can microwave it for 20-30 seconds. This softens the dough and makes it more manageable. Lightly flour the cardboard patterns and place them on the rolled-out dough, leaving a 1-inch space between pieces. For clean edges, cut with a pizza wheel. Remove and reserve excess dough.
Grab the opposite edges of the parchment paper and transfer it to the baking sheet. Bake 16-18 minutes or until pieces are firm and lightly browned on the edges.
Keep baked pieces on pans for 20 minutes then transfer to cool completely on a cooling rack.
Once the pieces are cool, you can start assembling your house using the Royal Icing and decorative cookies, candies, sprinkles, etc. Every gingerbread house is unique - use your imagination and have fun!