Lay parchment paper on a flat surface to prepare your work area.

Place one Pop Tart vertically as the central wall and align one Pop Tart on each side to form the base.

Trim the roof pieces from another Pop Tart so the angled top fits the house structure.

Assemble the house by attaching walls and roof pieces with decorating icing; let set.

Decorate with Christmas candy, using icing to secure pieces as desired.